From a window A, 10m above ground, the angle of elevation of the top C of a tower is xÂ, where tan xÂ=5/2 and the angle of depression of the foot D of the tower is yÂ, where tan yÂ=1/4. Calculate the height CD of the tower in meters.
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Answer: The answer is 110m
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AB || DE so AB=DE
AE || DE so AE=DE
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