50 POINTS AND BRAINLIST

given:

using sine rule:

To find the angle, we must subject ourselves to using trigonometric identities.

We know that in the triangle the ladder forms, we have the side opposite the angle and the hypotenuse.

The trigonometric formula that utilizes the information we have to the maximum is the sine function.

   degrees

Thus the angle of elevation is 61.9 degrees

Hope that helped!

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!