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24 January, 13:13

A 9.0 ladder rests against the side of a wall. The bottom of the ladder is 1.5 meters from the base of the wall. Determine the measurement of the angle between the ladder and the ground.

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  1. 24 January, 14:10
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    Well we know that the 9.0 meter ladder is the hypotenuse And it is a right triangle with base of 1.5 meters. we have the adjacent and the hypotenuse. which is cosine. So:

    cos (a) = adjacent/hypotenuse

    cos (a) = 1.5/9.0

    cos (a) = 1 / 6

    a = cos^-1 (1 / 6)

    a = 80.4 degrees
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