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From the top of a fire tower, 50 m high, a fire is spotted at an...

From the top of a fire tower, 50 m high, a fire is spotted at an angle of depression of 21.8 degrees. How far is the fire from the foot of the fire tower?

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Answer #1

Please refer to the given figure.

Length of the tower

Let the fire be at Point C, at a distance away from the base of the tower
is the angle of depression, which will be equal to , as they are alternate angles between two parallel lines   and

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