MATHEMATICS · Single correct · CBSE · Mathematics · Applications of Trigonometry · Applications of Trigonometry
Problem
From a point P on level ground, the angle of elevation of the top of a tower is 30°. After moving 50 m straight towards the tower to point Q, the angle of elevation becomes 45°. What is the height of the tower (to the nearest tenth of a metre)?
(a) 86.6 m
(b) 68.3 m
(c) 50.0 m
(d) 43.3 m