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March 25, 2017

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One of the angles of a right triangle measures 30°, and the hypotenuse is 10 inches long. How long is the side opposite the 30° angle?

  • math - ,

    sin 30° = x/10
    x = 10sin30° = 5

    or

    using the ratio of sides of the 30-60-90 triangle
    x/1 = 2/10
    x = 5

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