Question

can someone check my answer?

Answer 1

The figure shows a right triangle.

What is r ÷ q equal to?

i got \[\sin x degree \]

Answer 2

@hartnn

Answer 3

no,

sin = opposite side / hypotenuse

cos = adjacent side / hypotenuse

Answer 4

i know so doesn't that make is sin x degree?

Answer 5

side opposite to x is p


so, sin x is actually p/q

Answer 6

sin y degree?

Answer 7

thats correct!

Answer 8

oh ok i see lol i have more if it's ok ?

Answer 9

about 15 question like i got the answer but just need to make sure they are correct like this one i though it was correct but ended up being incorrect

Answer 10

A rocket travels 50 km vertically upward at a 90° angle from point A to point B. It then moves a distance of 50 km along the line segment BC, as shown below.


What is the height of the rocket, at point C, from the ground?




i got 75Km

Answer 11

75 is correct

Answer 12

yay

Answer 13

75 seems correct
h+hsin30

Answer 14

Find the measure of angle x. Round your answer to the nearest hundredth. (please type the numerical answer only)



i got 53.13 but someone else said it was 28.07 sp i'm not sure

Answer 15

its not 53.13
how did u get that ?

Answer 16

arctan(8/15)

Answer 17

idk i though i used the same thing your doing and got 53.13 i guess i must have type it in wrong

Answer 18

arctan(8/15) = 28.07

Answer 19

oh nvm yes okk i defenatly typed it in wrong

Answer 20

The picture below shows a right-triangle-shaped charging stand for a gaming system.


Which expression shows the length, BC, of the base of the stand?



7 cot 55 degrees?

Answer 21

thats correct

Answer 22

yay

Answer 23

The figure shows a right triangle AEB on a rectangle CBED.


What is the length of side AD?

i got 34.64 cm?

Answer 24

34.64 is correct :)

Answer 25

yay thank you

Answer 26

Look at the figure.


If sin y° = 9 divided by c. and tan y° = 9 divided by d. ,what is the value of cos y°?



this one i'm still working on it

Answer 27

tan y = sin y/ cos y

Answer 28

what do you mean

Answer 29

i'm sorry this one really confused me so much

Answer 30

thats the basic trigonometric formula
did you see if for the first time ?

Answer 31

tan y = sin y / cos y


so,

cos y = sin y/ tan y = (9/c) / (9/d) = ...

Answer 32

i got cos y = (d/c)

Answer 33

correct :)

Answer 34

yay!

Answer 35

If the sin 30° = one over two, then which statement is true?

cos 150° = 0 because the cosine and sine are supplements

cos 60° = one over two because the cosine and sine are complements <------- my answer

cos 150° = 1 because the cosine and sine are supplements

cos 60° = 0 because the cosine and sine are complements

Answer 36

sin x = cos (90-x)
you're correct!

Answer 37

yess btw i just want to take a moment and thank you so much because you really don't have to help me but you are so thank you :D

Answer 38

happy to help :)
most welcome ^_^

Answer 39

The sail of a boat is in the shape of a right triangle, as shown below.


Which expression shows the height, in meters, of the sail?


i got 8 sec 35 degrees

Answer 40

correct :)

Answer 41

yesss!

Answer 42

Jim is designing a seesaw for a children's park. The seesaw should make an angle of 30° with the ground and the maximum height to which it should rise is 1.5 meters, as shown below.


What is the maximum length of the seesaw?


i got 3 meters but then again i'm not really sure

Answer 43

3 is correct! good :)

Answer 44

omg i'm so surprized i got that one correct i though it was wrong lol

Answer 45

btw if i may as are you a boy or girl

Answer 46

The picture shows a portion of a river dam.

Answer 47

What is the height, in meters, of the river dam?

Answer 48

this one idk how to do it

Answer 49

40 degree angle,
you need adjacent side and you have hypotenuse

which ratio deals with adjacent side and hypotenuse ?

Answer 50

bdw, i am a boy ,
and a student, just like you :)

Answer 51

oh ok cool

Answer 52

and cosine?

Answer 53

yes, cos (or sec)

so whats cos 40 = ... ?

Answer 54

.07?

Answer 55

i mean .766

Answer 56

i mean

cos 40 = adjacent side / hypotenuse = ...? / ....?

Answer 57

5/10?

Answer 58

oh oops i mean 220 / cos 40 ?

Answer 59

cos 40 = height/ 220

Answer 60

height = 220 cos 40

Answer 61

oh i though it would be over

Answer 62

Look at the figure.


Based on the figure, which equation is true?

cos x° = tan y°

tan x° = sin y° <---- my answer

sin x° = cos y°

sin x° = tan y°

Answer 63

sin x = ....?

cos y = ...?

Answer 64

sin(angle) = opposite / hypotenuse
cos(angle) = adjacent / hypotenuse

Answer 65

so, from the diagram
sin x = ... ?

Answer 66

opposite side of x is?

Answer 67

5?

Answer 68

5/10

Answer 69

yes

cos y = ... ?

Answer 70

10/20?

Answer 71

5/10
and
10/20

aren't they equal ?

Answer 72

yes they are

Answer 73

i know that sin and cos are always complementary

Answer 74

so its C lol

Answer 75

yes! :)

Answer 76

Which pair of angles has congruent values for the sin x° and the cos y°?

20°; 20°

20°; 40°

20°; 50°

20°; 70° <--- my answer

Answer 77

correct

Answer 78

that was easy

Answer 79

lol yess

Answer 80

k now i only got 3 more

Answer 81

Find the measure of angle y. Round your answer to the nearest hundredth. (please type the numerical answer only)

Answer 82

whats your attempt ?

Answer 83

my my answer choice?

Answer 84

i was thinking 13/8?

Answer 85

i mean cos y 8/13

Answer 86

cos y = 8/13 is correct

y = \(\cos^{-1}(8/13)\)
use calculator or google :)

Answer 87

.332?

Answer 88

http://www.wolframalpha.com/input/?i=arccos+%288%2F13%29

Answer 89

or 52
02

Answer 90

52.02

Answer 91

lol that was my first choice but then i was like no i don't think the number would be that high

Answer 92

its angle in degrees, they're usually that high....or higher

Answer 93

oh ok lol