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A 13-foot ladder is placed against a wall. If the ladder cannot be placed at a slope less than 2.4, what is the minimum height of the wall?

A.5 feet
B.12 feet
C.20 feet
D.13 feet
E.8 feet

  • math -

    The 13-foot ladder is the hyp. of a rt
    triangle.

    tanA = m = 2.4,
    A = 67.38 deg.

    h = 13*sin67.38 = 12 Ft.

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