Question

If a 30 m ladder is placed against a 15 m wall such that




it just reaches the top of the wall, then the elevation of




the wall is equal to

Answer 1

Answer:

ladder work as hypotenuse

wall work as perpendicular

so p/ h = sin theta

so sin theta = 15/30=1/2

sin 30° = 1/2

so angle of elevation=30°