Question

A 20-foot ladder leans against a wall so that the ladder’s angle of elevation is 46°. Find x, the distance from the base of theladder to the building.
(1 point)
x = 13.89 ft
x = 14.39 ft
x = 43.23 ft
x = 28.79 ft

Answer 1

Use cosine: x = 20 cos 46°.
x = 20 × cos(46°) ≈ 20 × 0.694658 = 13.89 ft.

So x = 13.89 ft.