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From the top of a cliff 25 m high the an...

From the top of a cliff 25 m high the angle of elevation of a tower is found to be equal to the angle of depression of the foot of the tower. The height of the tower is

A

25 m

B

50 m

C

75 m

D

100 m

Text Solution

Verified by Experts

The correct Answer is:
b
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Knowledge Check

  • From the top and bottom of a building of height h metres, the angles of elevation of the top of a tower are alpha and beta respectively. Then the height of the tower is :

    A
    `(h cos alpha sin beta)/(sin (beta - alpha ))`
    B
    `(h cos beta sin alpha )/(sin (beta - alpha ))`
    C
    `(h cos alpha sin beta)/(sin (beta+ alpha ))`
    D
    None of these

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