Question

I need someone's help​

Answer 1

4.4 ft

Explanation:

The model is a right triangle with the side opposite 35° being 2.5 ft and the hypotenuse being the length of board required.

let the length of board be x , then

sin35° =
`(opposite)/(hypotenuse)` =
`(2.5)/(x)`

cross- multiplying gives

x × sin35° = 2.5 ( divide both sides by sin35° )

x =
`(2.5)/(sin35)` ≈ 4.4 ft ( nearest tenth )

Answer 2

I would say the final answer is 40 degrees (please don't report me if I got it wrong)