Asked by Jim

A tree growing on a slope of 13 degree to the horizontal is 14m tall. Find the length of the shadow it casts up the hill when the sun is at an angle of elevation of 30 degree. (The shadow is cast directly up the slope by the sun)
Answered by Steve
Draw a suitable diagram, and you can see that the shadow length x is given by

x/sin60 = 14/sin43
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