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Find the measure of angle A
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Find the measure of angle A

Find the measure of angle A-example-1
User Sleiman
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Apply the law of cosines. and solve for A


14^(2) = 11^(2) + 11^(2) - 2(11)(11)cos(A) \\ 196 = 121 + 121 - 242cos(A) \\ -46 = -242cos(A) \\cos(A) = 0.1900826446

A = 79.04239272, or 79

User JChao
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