Basic Trig Question

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What is a? if b=10, c=6, A=55

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@Air721,

Use Law of cosines here:
a^2 = b^2 + c^2 - 2bccosA
a^2 = 10^2 + 6^2 - 2(10)(6)cos(55)
a^2 = 136 - 120cos(55)
a^2 = 67.17082764
a = 8

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