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Prove that: "sin"[cot^(-1){"cos"(tan^(-...

Prove that: `"sin"[cot^(-1){"cos"(tan^(-1)x)}]=sqrt((x^2+1)/(x^2+2))`` ``cos `[tan^(-1)`(cot^(-1)x)}]=sqrt((x^2+1)/(x^2+2))```

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