Question

A ladder 15m long just reaches the top of vertical wall if the ladder makes an angle 60degree on the ground find height

Answer 1

Answer: 7.5m

Step-by-step explanation:

length of the ladder = 15m

angle between the wall  = 60°

angle between the ladder and the ground = 90° - 60° = 30°

height of the wall = x

sin30° = $\frac{x}{15}$

$\frac{1}{2}$ = $\frac{x}{15}$

x = $\frac{15}{2}$ = 7.5m