Question

The angle of elevation of the top of a tv tower from three points a,b and c in a straight line through the foot of the tower are α,2α and 3α,α,2α and 3α, respectively. If ab=a,ab=a, then height of the tower is

Answer 1

Answer:

Step-by-step explanation:

Let OP be the height

Open the vertical pole for Tower

Given the angles as Alpha 2 Alpha and 3 Alpha respectively.

Δd =OBP, OP/BP=sin2α

So OP=BPsin2α=asin2α