Asked by Anonymous

a 18 foot ladder is placed against a building so the angle between the ground and the ladder is 82 degrees. how high does the ladder reach on the building?
Answered by Reiny
After reviewing the basic trig ratios of right-angled triangles, you will see that
height/18 = sin82°
height = 18sin82° = ...
Answered by oobleck
Draw a diagram and review your basic trig functions. It should be clear that the height h can be found using

h/18 = sin82°
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