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From a point on level ground 30 yards from the base of a building, the angle of elevation to
the top of the building is 38.70. Approximate the height of the building to the nearest foot.

Answer :

The building is 24 (whatever’s you want ex. Meters, Feet) high. Because 38.7=tan^-1(height/30). Or cos(38.7)=30/hypotenuse. Hypotenuse=30/cos(38.7

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