The horizontal distance between two stations P and Q is 100 m. The vertical ang

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The horizontal distance between two stations P and Q is 100 m. The vertical angles from P and Q to the top of a vertical tower at T are 3o and 5o above horizontal, respectively. The vertical angles from P and Q to the base of the tower are 0.1o and 0.5o below horizontal, respectively. Stations P, Q and the tower are in the same vertical plane with P and Q being on the same side of T. Neglecting earth's curvature and atmospheric refraction, the height (in m) of the tower is

Options:

A . 6.972

B . 12.387

C . 12.540

D . 128.745

Answer: Option B

-NA-

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