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17 April, 15:25

In a right triangle, angle C measures 40. the hypotenuse of the triangle is 10 inches long. what is the approximate length of the side adjacent to angle C

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  1. 17 April, 15:54
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    Since angle C is not 90 degrees, it's one of the acute angles

    in the right triangle.

    (The side adjacent to angle C) divided by (hypotenuse)

    is the cosine of angle C.

    (adjacent) / (10 inches) = cos (40 degrees)

    Multiply each side by (10 inches):

    Adjacent side = (10 inches) x cos (40) =

    (10 inches) x 0.766 =

    7.66 inches (rounded)
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