1.

Prove that:- Cos [tan​​​​-1{sin(cot​​​​-1​​x)}] = √1+x​​​​​​2/√2+x​​​​​​2

Answer»

Prove that:-

Cos [tan​​​​-1{sin(cot​​​​-1​​x)}] = √1+x​​​​​​2/√2+x​​​​​​2



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