math

what does steeper than 30 degrees mean?

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  1. Look at a 30-60-90 ° triangle
    the sides opposite these angles are 1 , √3 and 2 respectively.

    the slope of a line = tan (angle of the line)

    tan 30 = 1/√3 = .577 appr.

    So any line steeper than 30° will have a slope greater than .577

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