Math, asked by Kusumshrestha07, 1 day ago

b ^ 2 * cos^2 C + c ^ 2 * cos^2 B + bc * cos(B - C) = 1/2 * (a ^ 2 + b ^ 2 + c ^ 2) ? Solution please

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Answered by mokingshidki

0

Answer:

b ^ 2 * cos^2 C + c ^ 2 * cos^2 B + bc * cos(B - C) = 1/2 * (a ^ 2 + b ^ 2 + c ^ 2)

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