The angle of elevation of the top of a tower observed from each of the three points ,

MATHEMATICS · Subjective · CBSE · Mathematics · Applications of Trigonometry · Applications of Trigonometry

Problem

The angle of elevation of the top of a tower observed from each of the three points

A

B

, and

C

on the ground, forming a triangle, is the same angle

\alpha

. If

r

is the circumradius of triangle

ABC

, find the height of the tower.