Question

no one knows the answer to this http://prntscr.com/3r0pih :O

Answer 1

First you need to ask yourself, "will I need to use sin, cos, or tan."

Answer 2

sin

Answer 3

Okay, so sin = opposite/hypotenuse which won't work. Try Tan, which is opposite/adjacent

Tan(x) = 80/35

Divide that