If the angle of elevation of the top of a vertical tower from a point on the ground is \( 60^{\c...

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If the angle of elevation of the top of a vertical tower from a point on the ground is \( 60^{\circ} \) and from another point which is \( 10 \mathrm{~m} \) vertically above the first, its angle of elevation is \( 45^{\circ} \), then find the height of the tower.
a. \( 5(\sqrt{3}+3) \mathrm{m} \)
b. \( (\sqrt{3}+3) \mathrm{m} \)
c. \( (\sqrt{3}-3) \mathrm{m} \)
d. \( 5(\sqrt{3}-3) \mathrm{m} \)
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