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The surveyor measures the top of the cliff from a point that lies at a distance of 25.4 m from the base of the cliff. The angle of elevation of the top of the cliff is 72.5 degrees.
If the height of the cliff is taken to be H, tan 72.5 = H/25.4
=> H = 25.4*tan 72.5
=> H = 80.55
The height of the cliff is 80.55 m
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