Math, asked by sanya55, 1 year ago

please solve this trigonometry question also

Q.
$prove \: that \: \\ (cosx - cosy) {}^{2} + ( sinx - siny) {}^{2} = 4 \sin {}^{2} \frac{x - y}{2}$
Please solve

Answers

Answered by Shreya1001

1

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