Question

In the adjoining figure, the angle of elevation of the point C from the point B, is:

विकल्प

• 30°

• 45°

• 22.5°

• 67.5°

Answer 1

22.5°

Explanation:

Triangle ABC is right-angled at A.

So, the interior angles satisfy x + 3x + 90° = 180°. 

Thus, 4x = 90° and x = 22.5°.

The angle of elevation of C from B is the angle at B (x = 22.5°).