A 15 m ladder reaches a wall’s top at a 60° angle with the wall. What is the wall’s height?
A 15 m ladder reaches a wall’s top at a 60° angle with the wall. What is the wall’s height?
A: 10 m
B: 12 m
C: 15√3 m
D: 20 m
The ladder forms a right triangle with the wall (opposite) and ground (adjacent); with a 60° angle between the ladder (hypotenuse; 15 m) and wall.