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Aright circular cylindrical tower with h...

Aright circular cylindrical tower with height 'h' and radius 'r', stands on the ground. Let 'p' be a point in the horizontal plane ground and ABC be the semi-circular edge of the top ofthe tower such that B is the point in it nearest top. The angles of elevation of the points A and B are `45^(@)` and `60^(@)` respectively. Show that `h/r=(sqrt3(1+sqrt3))/2`.

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