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24 September, 04:32

What is the measure of the greatest angle of a triangle if the side lengths are 21m, 23m, and 25m

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  1. 24 September, 04:40
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    CosA = (21^2+23^2-25^2) / 2*21*23

    cosA=345/966

    A=cos^-1 (345/966)

    A=69.08
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