The angles of depression of the top and the bottom of a \( 7 \mathrm{~m} \) tall building from t...

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The angles of depression of the top and the bottom of a \( 7 \mathrm{~m} \) tall building from the top of a tower are \( 45^{\circ} \) and \( 60^{\circ} \) respectively. Find the height of the tower in metres.
(a) \( 7(3+\sqrt{3}) \)
(b) \( \frac{7}{2}(3-\sqrt{3}) \)
(c) \( \frac{7}{2}(3+\sqrt{3}) \)
(d) \( 7(3-\sqrt{3}) \)
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