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a tree casts a shadow 40m long when the sun rays are at an angle of 36 degrees to the ground. How tall is the tree?

micheala950831  Mar 28, 2017
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tan(an angle) = (length of side opposite) / (length of side adjacent)

tan(36º) = 40 / x

x * tan(36º) = 40

x = 40 / tan(36º)

x ≈ 55.055 m

hectictar  Mar 28, 2017
edited by hectictar  Mar 28, 2017
edited by hectictar  Mar 28, 2017
edited by hectictar  Mar 28, 2017

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