From a point on the ground 100 m away from the foot of a tower, the angle of elevation of the top is 45°. Find the height of the tower.
Q1. From a point on the ground 100 m away from the foot of a tower, the angle of elevation of the top is 45°. Find the height of the tower.
Answer: 100 m
Explanation: tan 45° = height / 100, so height = 100 m, as tan 45° = 1.