A right circular cylindrical tower, heig...

A right circular cylindrical tower, 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 of the tower such that B is the point in it nearest to P. The angles of elevation of the points A and B are `45^(@)" and "60^(@)` respectively. Show that `(h)/(r)=(sqrt(3)(1+sqrt(3)))/(2)`.

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