If A 6-foot-tall man standing on the ground casts a shadow. The angle of the elevation of the Sun is 20°. How long is the shadow?


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If the man is 6 feet tall and the sun's angle of elevation is 20 degrees, use the tangent function. Tan(20)=6/x. Solve and you get x=16.4849 (approximate). The shadow is about 16.5 feet long.

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