1.

A vertical pole (more than 100 m high) consists of two protions, the lower being one third or the whole. If the upper portion subtends an angle tan ^(-1)((1)/(2)) at a point in a horizontal plance through the foot of the pole and distance 40 ft from it, then the height of the pole is

Answer»

100 gt
120 FT
150 ft
None of these :

Answer :B


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