Question

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If \displaystyle x+y+z=\pix+y+z=π prove the trigonometric identity
\displaystyle cot{\frac{x}{2}}+cot{\frac{y}{2}}+cotg\frac{z}{2}=cot{\frac{x}{2}}cot{\frac{y}{2}}cot{\frac{z}{2}}cot2x​+cot2y​+cotg2z​=cot2x​cot2y​cot2z
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Answer 1

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Answer 2

Answer:

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