From the top of a 7 m high building, the angle of elevation of the top of a cable tower is 60^\circ and the angle of depression of its foot is 45^\circ. Determine the height of the tower.

Question

From the top of a $7$ m high building, the angle of elevation of the top of a cable tower is $60^\circ$ and the angle of depression of its foot is $45^\circ$. Determine the height of the tower.

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