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9 July, 17:46

A 20 foot ladder is leaning against a house. It touches the ground 12 feet from the house. How far above the ground does it touch the house?

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  1. 9 July, 19:05
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    Cosx = 12/20

    x = cos inverse (12/20)

    x=53.13010235

    sin53.13010235=y/20

    y=20X sin53.13010235

    y=16
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