trigonometric angles without a calculator

Trigonometric Angles Without A Calculator

Answers

Answer 1

[tex]~~~~~~~\cos x = \dfrac{ \text{Base}}{\text{Hypotenuse}}\\ \\\\\implies \cos x= \dfrac{9}{18}\\\\\\\implies \cos x = \dfrac 12\\\\\\\implies x= \cos^{-1} \left( \dfrac 12\right)\\ \\ \\\implies x = 60^{\circ}[/tex]


Related Questions

Someone solve number 8 pleaseeeee

Answers

Answer:

2 cats

Step-by-step explanation:

12% of 24 = 2.88

Answer:

2 cats were adopted.

Step-by-step explanation:

When finding a percentage of something, heres a trick. Just take the number you taking the perccentage of, and mutiply it by the percentage. In this case, 24*12.

24*12 = 288.

Now take that new number and divide it by 100. Now you have your answer. In this case,

288/100 = 2.88.

Becuase these are cats, we can't have or adopt half of one XD. You can't adopt half of a cat, so we round it down to 2. Meaning, 2 cats were adopted.

A rubber bouncy ball is dropped from a height
of 177.00 cm onto a hard flat floor. After each
bounce, the ball returns to a height that is 19%
less than the previous maximum height. What
is the maximum height reached after the 9th
bounce?

Answers

Answer:

0.0000571

Step-by-step explanation:

Height after 9th bounce = Initial height * (19/100)^9

                                        = 177*(0.19)^9

                                        = 0.00005711572

can you answer it pls and by the way i am in 5th grade

Answers

Step-by-step explanation:

3×3 = 9, so it's greater than 3

3×4/3 = 4, so it's greater than 3

3×5/5 = 3, so it's equal to 3

3x4/9 = 4/3, so it's less than 3

3x5/6 = 5/2, so it's less than 3

40x40x40 divided by 6 Help me pls

Answers

Answer:

the answer is 10666.6666667.

Step-by-step explanation:

40*40*40=64000

64000/ 6=10666.6666667

Can someone help me with this problem

Answers

d(4.4)

hope it really helps ...!!!

An urn of boiling water in an office has a capacity of 20litres. If it filled to maximum capacity, calculate the number of 250ml cups that can be shared from it.

Answers

Ok, in a liter there is 1000 milliliters, multiply by 20 to get 20,000, now we know the urn has 20,000 milliliters and we simply divide it by 250 to get about 80 cups

Express cos S as a fraction in simplest terms.

Answers

Answer:

cos S = 7/25

Step-by-step explanation:

cosine is the ratio of the side adjacent to angle S and the hypotenuse.

use the pythagorean Theorem to or a Pythagorean triple to find the third side of the triangle It is a  7-24-25 triple or

b²=c²-a²

b=√c²-a²

b=√625-196

b=√49=7

cos S = 7/25

Half of the product of two consecutive numbers is 105. which equation can be used to solve for n, the smaller of the two numbers? n2 n – 210 = 0 n2 n – 105 = 0 2n2 2n 210 = 0 2n2 2n 105 = 0

Answers

The equation that can be used to solve for n, the smaller of the two numbers would be n² + n - 210 = 0.

What is a quadratic equation?

A quadratic equation is the second-order degree algebraic expression in a variable. the standard form of this expression is  ax² + bx + c = 0 where a. b are coefficients and x is the variable and c is a constant.

If we use n to be the smaller number of two integer numbers, then the next consecutive number is n + 1.

The product of those two numbers would become n × (n + 1) = n (n + 1).

Half of that product is n (n + 1) / 2.

And the question states that the equation is equal to 105, so the equation becomes,

n (n + 1) / 2 = 105

Now we have to simplify that equation until we get an expression equal to one of the choices,

Multiply both sides by 2

n (n + 1) = 210

n² + n = 210

Subtract 210 from both sides

n² + n - 210 = 0

Thus, the equation formed is the quadratic equation.

Learn more about quadratic equations;

brainly.com/question/13197897

Answer:

n² + n - 210 = 0 is your answer! hope it helps!

Step-by-step explanation:

GIVING BRAINLIEST TO THE PERSON THAT CAN EXPLAIN THIS THE BEST (:

Answers

Answer:

30

Step-by-step explanation:

Perimeter of parallelogram = 70 ft

-> 2x + 2y = 70 .....(1)

x = 6y (Given) .....(2)

From equations (1) & (2)

2(6y) + 2y = 70

12y + 2y = 70

14y = 70

y = 70/14

y = 5

-> x = 6*5

-> x =30

This shape is called parallelogram.

perimeter : 2(base + height)

Identify the base and height

base : x ≈ 6(y)                                          [ as x is 6 times as large as y ]

height : y

====================================

2(base + height) = perimeter2(6(y) + y) = 70 2(7y) = 707y = 35                                             [ divide both sides by 7 ]y = 5

Find x:

x ≈  6(y)x ≈ 6(5)x =  30

Real world problem for quadratic using square root property?
please help ​

Answers

Answer:

Example:

Sri Rangaman's flower garden is now a square. If she enlarges it by increasing the width 1 meter and the length 3 meters, the area will be 19 square meters more than the present area. What is the length of a side now?


Another Example how to solve it:

1. Solve the quadraticsa) (2x + 5)2 = 10b) x2 - 2x + 1 = 52. Given the formula HF = -16t2 + HI. How long does it take a ball to fall from a roof to the ground 25 feet below1. Solve the quadraticsa) (2x + 5)2 = 10b) x2 - 2x + 1 = 52. Given the formula HF = -16t2 + HI. How long does it take a ball to fall from a roof to the ground 25 feet below



How to use the square root function in word problems?Examples: 1. The floor of a square room is covered with square-foot floor tiles. If 81 tiles cover the floor, how long is each side of the room?2. Mr. Dase found a square digital image of a famous painting on a Web site. The image contained 490,000 pixels. How many pixels high is the image?



two children want to share 5 cupcakes so that each child gets the same amount. How many cupcakes should each child get

Answers

Answer:

2.5

Step-by-step explanation:

5 divided by 2 equals 2.5

find the height of the equilateral triangle ​

Answers

Answer:

height of the equilateral triangle is 5cm

by the use of Pythagoras

Step-by-step explanation:

H^2 = A^2 + O^2devide the base of the triangle i.e 3 as A and 6 as HO is Same as height hby substitution6^2 = 3^2 + O^236 = 9 + O^2O^2 = 36-9O = √27O or h = 5.19

par
-
129
2 A stew recipe calls for 3.75 pounds of meat. Jack wants to make 5 batches of stew.
How many pounds of meat does he need? Show your work.

Answers

Answer:

18.75 pounds

Step-by-step explanation:

3.75 pounds per 5 batches

batch 1 :    3.75                                                                 7.5

add them +                                                                    +  7.5

batch 2:  3.75                                                                =   15

              =                                                                          +3.75

                7.5                                                                  = 18.75

                                                                                 hope this helped

batch 3:  3.75

add them +

batch 4  3.75

              =  7.5

                 

    batch 5  3.75

Write an example problem(s) for area.

Answers

Answer:

Example 1.

A square with side lengths of 5.

5*5 = 25.

So the area would be 25 units ^2

Example 2.

A rectangle with a length of 9 and a width of 4

9*4 = 36

So the area is 36 units ^2

Answer:

A square with side lengths of 5.5*5 = 25.

Step-by-step explanation:

help please im in class rn

Answers

Answer:

https://brainly.com/question/27407610

Step-by-step explanation:

HELPPPP HEL-P MEE ME

Answers

Answer:

208

Step-by-step explanation:

the formula is:

2*(width*lenght+height*lenght+height*width)

2*(6*8+4*8+4*6)

208

Answer:

208 m²

[tex] \: [/tex]

Step-by-step explanation:

In the given figure, it is given a net of cuboid where, the length is 8m, the breadth is 6m and the height is 4m and we have to find the surface area of the cuboid.

So, the formula for finding the surface area is ;

[tex]\\{ \longrightarrow \qquad{ \underline {\boxed{ \pmb{ \mathfrak{ \: Surface\: area_{(cuboid)}=2(lb + bh + lh )}}}}}} \: \: \bigstar \\ \\[/tex]

Now, we'll substitute the values in the formula :

[tex]\\{ \longrightarrow \qquad{ {{ \sf{ { \: Surface\: area_{(cuboid)}=2(8.6 + 6.4 + 8.4 }}}}}}) \: \: \\ \\[/tex]

[tex]{ \longrightarrow \qquad{ {{ \sf{ { \: Surface\: area_{(cuboid)}=2(48 + 24 + 32 }}}}}}) \: \: \\ \\[/tex]

[tex]{ \longrightarrow \qquad{ {{ \sf{ { \: Surface\: area_{(cuboid)}=2(104 }}}}}}) \: \: \\ \\[/tex]

[tex]{ \longrightarrow \qquad{ { \pmb{ \frak{ { \: Surface\: area_{(cuboid)}=208 }}}}}}\: \: \\ \\[/tex]

Therefore,

The surface area of the cuboid is 208m²

a. 30
b. 86
c. 32
d. 79

Answers

Answer:

30°

Step-by-step explanation:

<KOL = <JOL - <JOK

= 58° - 28°

= 30°

A company is promoting two employees to the director and manger roles. If there are currently 35 employees, how many ways can those positions be filled?
1785

1190

595

270

Answers

Answer:

595

Step-by-step explanation:

2 positions for 35 employees.

[tex]C(n) = (\frac{n}{k}) = \frac{n!}{(k!(n-k)!)}[/tex]

Where n = 35, total number of employees and k = 2, how many spots available

[tex]\frac{35}{2} = \frac{35!}{2!(n-k)!} = \frac{35*34}{2 * 1} = 595[/tex]

Answer:

595

Step-by-step explanation:

What is 11 in x 17 in (7.7 in x 23) in

Answers

33117.7 in is the answer I believe…

Answer:

33117.7

Step-by-step explanation:

33117.7 is the perfect answer

What is the vertex of g(x) = 3x2 − 12x 7? (−6, −5) (−2, −5) (2, −5) (6, −5)

Answers

The vertex of g(x) = [tex]\rm 3x^2 - 12x + 7[/tex] is (2, -5), the correct option is C.

What is the vertex of the parabola?

The vertex of a parabola is the highest or lowest point, also known as the maximum or minimum of a parabola.

The standard equation of the vertex of the parabola is;

[tex]\rm a(x - h)^2 + k[/tex]

Where h and k are the coordinates of the vertex of the parabola.

The given expression is;

[tex]\rm =3x^2 - 12x + 7\\\\= 3(x^2 - 4x) + 7\\\\ = 3[ (x - 2)^2 - 4)] + 7\\\\= 3(x - 2)^2 - 12 + 7\\\\= 3(x - 2)^2 - 5[/tex]

On comparing with the standard form of vertex of the parabola

h = 2 and k = -5

Hence, the vertex of g(x) = [tex]\rm 3x^2 - 12x + 7[/tex] is (2, -5).

To know more about parabola click the link given below.

https://brainly.com/question/20333425

At approximately what time on the next day does the depth first reach 4 meters? 3:00 am 4:00 am 5:00 pm 10:00 am

Answers

Answer:

the answer is B, 4:00 am

Step-by-step explanation:

Answer:

At approximately what time on the next day does the depth first reach 4 meters?

3:00 am

4:00 am

5:00 pm

10:00 am

The correct answer is B. 4:00 am  

The community center organizers want to buy 600 hot dogs. What will the cost be if they purchased the packages with the best buy? The best buy is 50 for 12 dollars

Answers

Answer:

144

Step-by-step explanation:

do 5 into 600 and u get 12 have a good day!!!

Answer:

$144

Step-by-step explanation:

first, we need to divide 600 by 50, to get them organized for the best packages. 600/50 = 12.

then, we multiply that (the 12) by the cost ($12/ea) so 12*12 which is $144 if they use the bundling.


Felipe received a $15.25 gift card for a photo center. He used it to buy prints that cost 6 cents each. The remaining balance, B (in dollars), on the card after
buying x prints is given by the following
B = 15.25 -0.06x
What is the remaining balance on the card if Felipe bought 50 prints?


Can anyone help me ?

Answers

Answer:

12.25

Step-by-step explanation:

B = 15.25 -0.06x

B = 15.25 -0.06(50)

B = 12.25

The answer is 254.16 is just 15.25 divided by 0.06

 GIVING BRAINLIEST TO THE PERSON THAT CAN EXPLAIN THIS THE BEST (:

Answers

Answer:

the given picture is not clear

.............................................

Answers

Answer:

90 degrees

Step-by-step explanation:

it is a right angle

Please help
I need the lateral surface area

Answers

Answer:

[tex]la = 588 \: \: {cm}^{2} [/tex]

Step-by-step explanation:

Lateral area for trapezoidal prism:

- Is the sum of all the areas excluding the base area.

la - Lateral area

[tex]a = 20\\ b = 10 \\ c = 10 \\ d = 9 \\ l = 12[/tex]

[tex]la = al + \: bl + \: cl + \: dl[/tex]

[tex]la = l(a + \: b + \: c + \: d)[/tex]

[tex]la = 12(20 + 10 + 10 + 9)[/tex]

[tex]la = 588 \: \: {cm}^{2} [/tex]

Quadratic Functions - Part 2
Graphing Quadratic Functions Using Vertex Form - Part 1
Independence Practice

1. Identify the vertex, complete the table and graph g(x) = (x – 4)^2 – 5.

2. Identify the vertex, complete the table and graph h(x) = (x + 1)^2 + 4.

Answers

Answer:

h(x) = (x + 1)^2 + 4/ 23+40 =49

Step-by-step explanation:

The step by step is on papamath.com

please help im so confused (need asap)

Answers

[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]

Let's solve ~

[tex]\qquad \tt \dashrightarrow \:10 {x}^{2} - 25x + 15 = 0[/tex]

[tex]\qquad \tt \dashrightarrow \:5(2x {}^{2} - 5x + 3) = 0[/tex]

[tex]\qquad \tt \dashrightarrow \:2x {}^{2} - 5x + 3 = 0[/tex]

[tex]\qquad \tt \dashrightarrow \:2x {}^{2} - 3x - 2x + 3 = 0[/tex]

[tex]\qquad \tt \dashrightarrow \:x(2x - 3) - 1(2x - 3) = 0[/tex]

[tex]\qquad \tt \dashrightarrow \:(x - 1)(2x - 3) = 0[/tex]

Therefore, the required factors are ~ (x - 1) and (2x - 3)

So, correct choice is B

The is a picture show all details and work
(triangles)

Answers

Answer:

x: 8.75

y: 8.5

Step-by-step explanation:

Since the two triangles are similar, you can find the scale of LJK relevant to TRS by dividing 7/4 = 1.75

This means each side of LJK is 1.75 times greater than the respective side of TRS

Now you can plug this in to the other two sides by doing 5*1.75=8.75 and 6*1.75=10.5

This solves x, but since side LK is y+2, y is 10.5-2=8.5

x=8.75

y=8.5

I NEED THIS ASAP
five doctors are selected at random from a hospital employing 27 doctors to fill out a question

*WILL GIVE BRAINLIEST

Answers

Answer:

See below

Step-by-step explanation:

There are   27 C 5 ways to choose 5 doctors from 27

             = 27 ! /(22!  5!)  = 80730 ways to choose 5

This is a COMBINATION.

Answer: Combination

Step-by-step explanation: It has no order of selection. It is random and can't be paired like permutation.

Compare with another response

Other Questions
Express in simplest form. what reveals the company earnings and products territories or markets Which equation represents a circle with a center at (3, 5) and a radius of 6 units? (x 3)2 (y 5)2 = 6 (x 3)2 (y 5)2 = 36 (x 3)2 (y 5)2 = 6 (x 3)2 (y 5)2 = 36 Ill give the brainiest to whoever can answer these 3 riddles:1) I have lakes with no water, mountains with no stone, and cities with no buildings. What am I?2) Who is that with a neck and no head, two arms and no hands?3) Which of the following words dont belong in the group and why? CORSET, COSTER, SECTOR, ESCORT, COURTS. Which property is 3x-6y=2(x-2y)? Select the correct answer. East Asia is home to approximately what percentage of the world's population? A. 15% B. 50% C. 25% D. 30% How can I fix these problems? Riddle question time ! You measure my life in hours and I serve you by expiring. I'm quick when I'm thin and slowwhen I'm fat. the wind is my enemy. What am I ? The volume of a cylinder is 7271 cm. If the radius is 3 cm, what is the heightof the cylinder?3 cm.O A. 4 cmB. 12 cmC. 8 cmD. 24 cm Explain why an organization may want a new employee to become familiarized with the organization Jorge is 23 years old and plans to go out with his friends for happy hour at a bar after work. What is the BEST safety measure for him to put in place in this scenario? A. He should only consume two to three drinks. B. Let the friend who drinks the least drive home. C. Ask a friend to help him stick to one drink. D. Try smoking marijuana instead of drinking. Trevor has 3 baseball cards and 2 football cards. He randomly picks acard. He then randomly picks a second card from the cards that remain.What is the probability that Trevor selects only football cards? how many times has the earth been hit with tornados Select the correct answer. Which act prohibits banks from treating people differently based on race, origin, martial status, or age?A. Federal Credit Allocation ActB. Home Mortgage Disclosure ActC. Fair Credit Billing ActD. Equal Credit Opportunity Act Leg extension exercises focus on which muscle region of the body?O quadricepsO ObliquesO calvesO abdominal Which weather component mostly affects the type of precipitation that falls in a certain area? 39The school band held a fundraiser by selling books and magazines. The diagram shows thatthe numbers of books Donna and Gemma each sold are proportional to the numbers ofmagazines each girl sold.DONNAGEMMAKEY= 1 Book= 1 MagazineWhat is the constant of proportionality?Amagazine per bookB books per magazine24 - Doano reapazine8 Doana36 - Genma magazines12 Generes boole,book3 magazines per bookD6 books per magazine The figure is a parallelogram. Find the missing measures. Enter the number only. No symbols. ( can someone help me please, i will give brainliest) Mahmood Qamber and Basel Alaraibi start walking at the same point, but Mahmood walks 50 feet north while Basel walks 75 feet east. How far apart are Mahmood and Basel when they stop? Washingtonians supported the war effort at home byrationing goods and buying bonds.collecting goods and selling bonds.housing soldiers and spying on immigrants. rationing goods and working on farms.