The law of cosines for ABC can be set up as 52 = 72 + 32 - 2 (7) (3) cos (B). What could be true about ABC? Law of cosines: a2 = b2 + c2 - 2bccos (A) a = 5 and c = 7 a = 3 and c = 3 b = 7 and c = 5 b = 5 and c = 3
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