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Mathematics, 02.12.2019 12:31 aliyahadekoya

Law of cosines: a2 = b2 + c2 – 2bccos(a)

which equation correctly uses the law of cosines to solve for y?
92 = y2 + 192 – 2(y)(19)cos(41°)
y2 = 92 + 192 – 2(y)(19)cos(41°)
92 = y2 + 192 – 2(9)(19)cos(41°)
y2 = 92 + 192 – 2(9)(19)cos(41°)

Law of cosines: a2 = b2 + c2 – 2bccos(a) which equation correctly uses the law of cosin

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Law of cosines: a2 = b2 + c2 – 2bccos(a)

which equation correctly uses the law of cosin...

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