The angle of elevation of a top of the tower from a point 120 m. from its foot is 45°. How much the tower is to be raised when the elevation
The angle of elevation of a top of the tower from a point 120 m. from its foot is 45°. How much the tower is to be raised when the elevation is to be 60° at the same point ?
A) 120 √3 m
B) 120 m
C) 120(√3 + 1) m
D) 120(√3 – 1) m
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