Abby used the law of cosines for KMN to solve for k. k2 = 312 + 532 - 2 (31) (53) cos (37°) Law of cosines: a2 = b2 + c2 - 2bccos (A) What additional information did Abby know that is not shown in the diagram?
mK = 37° and n = 31
mK = 37° and k = 31
mN = 37° and n = 31
mN = 37° and k = 31
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