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OpenStudy (anonymous):
From the top of a building, the angle of depression of a mark on the ground is 40°. Find the height of the building (to one decimal place) if the distance between the mark and the foot of the building is 240 m. Show working out.
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OpenStudy (midhun.madhu1987):
|dw:1410662595524:dw| find h using the value of tan 40. find tan 40 from calculator.
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