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Mathematics, 27.08.2019 00:00 SuBzErO24
In δdef, de = 11, ef = 9, and angle e = 140°. which equation correctly uses the law of cosines to solve for the third side? e2 = 112 92 − 2(11)(9)cos(140°) 112 = e2 92 − 2e(9)cos(140°) 92 = e2 112 − 2e(11)cos(140°) e = 11 9 − 2(11)(9)cos(140°)
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In δdef, de = 11, ef = 9, and angle e = 140°. which equation correctly uses the law of cosines to so...
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