Asked by Anonymous

From the top of a 200 metres high building, the angle of depression to the bottom of a second building is 20°. From the same point, the angle of elevation to the top of the second building is 10°. Calculate the height of the second building.

Answers

Answered by oobleck
The distance z between the buildings can be found via
200/z = tan 20°

Now, the height you want can be found using
h = 200 + z tan 10°
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