a 35-foot long ladder is leaninig against the wall of a building. how far from the ground is the top of the ladder and how far from the base of the buildings is its foot if it makes a 20° angle with the wall ?

Answer 1

well, you know that

y/35 = cos 20°
x/35 = sin 20°

This problem is slightly sly, since most of the time they give you the angle with the ground!