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5 July, 14:05

A 15 foot board rest against a wall. The angle that the board makes with the ground is 60 degrees. How far is the base of rhe board away from the wall

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  1. 5 July, 16:21
    0
    7.5'

    Step-by-step explanation:

    Use trigonometry.

    Draw it out.

    the hypotenuse is 15.

    You want to find the adjacent side.

    Use cosine (the adjacent over hypotenuse)

    cos60=A/15

    15cos60=A

    7.5=A
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