Question 12:
From the top of a 7 m high building, the angle of elevation of the top of a cable tower is 60° and the angle of depression of its foot is 45°. Determine the height of the tower.
Answer:
Let AB be a building and CD be a cable tower.
In ΔABD,
Therefore, the height of the cable tower is 7(√3 + 1)m.
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