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     EduGorilla 
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    A tower subtends an angle α  at a point A in the plane of its base and the angle of depression of the foot of the tower at a point b ft, just above A, is β . Then, the height of the tower is

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    1. b tan α cot β

    2. b cot α tan β

    3. b cot α cot β

    4. b tan α tan β

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Reply To: A tower subtends an angle α  at a point A in the plane of its base and the angle of depre….
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