Prove the "tan"("tan"^(-1)x +"tan"^(-1) ...

Prove the `"tan"("tan"^(-1)x +"tan"^(-1) y + "tan"^(-1)z)="cot"("cot"^-1x +"cot"^(-1) y+"cot"^(-1) z)`

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ARIHANT PUBLICATION-INVERSE TRIGONOMETRIC FUNCTIONS -ODISHA BUREAU.S TEXTBOOK SOLUTIONS

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Prove the "tan"("tan"^(-1)x +"tan"^(-1) y + "tan"^(-1)z)="cot"("cot"^-...
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If "tan"^(-1)x+"tan"^(-1)y+"tan"^(-1)z=pi/(2), show that xy+yz+zx=1
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Solve sin^(-1)x +sin^(-1)(1-x) =(pi)/(2).
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