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OpenStudy (anonymous):
the horizontal distance between two trees of different heights is 60m. the angle of depression of the top of the first tree when seen from the top of the second tree is 45degree.of the height of the second tree is 80m.find the height of the first tree.
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OpenStudy (shubhamsrg):
|dw:1358007751809:dw| Does this help ?
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