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19 January, 19:29

A right triangle's hypotenuse is 20cm long. What is the length of the side opposite a 60 degree angle? Give your answer to the nearest tenth of a centimeter.

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  1. 19 January, 21:33
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    Since you are dealing with hypotenuse and opposites, you need to use sine.

    sin = (opposite) / (hypotenuse)

    sin (60) = (opposite) / 20

    sin (60) * 20 = 17.3

    The length of the opposite side is approximately 17.3 centimeters
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