A tower was built on two sections. From a point 80 feet from the base of a tower, the angle of elevation of the top of the first section is 27°, and the angle of elevation of the top of the second section is 42°. To the nearest foot, what is the height of the top section of the tower?
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Answer:
tan25°=a/87, a ( half of tower, lower part) = 36.0366.
tan40°=x/87, x = 63.209.
subtract 63.209-36.0366= 27.172427 ft.
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Answer:
61m
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