If \( x, y \) and \( z \) are in A.P., prove that \( \cot y=\frac{\... VIDEO
If \( x, y \) and \( z \) are in A.P., prove that \( \cot y=\frac{\sin x-\sin z}{\cos z-\cos x} \).https://bit.ly/YTAI_PWAP https://www.pw.live
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