Question

In given Fig., the angle of depression from the observing position D and E of the object at A are ____________.

Options

• 60°, 60°

• 30°, 30°

• 30°, 60°

• 60°, 30°

Answer 1

In given Fig., the angle of depression from the observing position D and E of the object at A are 30°, 60°.

Explanation:

`because "APD", angle 1 = 90^circ - 60^circ = 30^circ`

`therefore "APE", angle 2 = angle "EAB" ....["atl Zs"]`

`therefore angle 2 = 60^circ`

Hence the angles of depression at D and E are 30° and 60° respectively.