Question

A 12 ft. ladder is being placed against a 10 ft.

wall. At what angle of elevation should the
ladder be placed so that the top of the ladder
touches the top of the wall?

Answer 1

Explanation:

Height of wall = 10ft

Length of ladder = 12ft

Angle of elevation be x

Sin x = opp/hyp

Sin x = wall height/length of ladder

Sin x = 10/12

Sin x = 0.83

X = Sin-¹ (0.83)

X = 56.44°