Question

BC is a tower, B is its base. A is a point on a horizontal line passing through B, the angle of elevation of C from A is 60°. From another point D on AB, the angle of elevation is found to be 30°, then BD =

• A. 2AB
• B. $\frac{1}{2}$AB
• C. 3AB
• D. $\frac{1}{3}$AB

Answer 1

Answer: (C)

3AB

Answer 2

The correct option is (C): 3AB