Find the differentiation of \({\cos ^{ - 1}}x\)

1.	Find the differentiation of \({\cos ^{ - 1}}x\)
A.	\(\frac{1}{{\sqrt {1 - {x^2}} }}\)
B.	\(- \frac{1}{{\sqrt {1 - {x^2}} }}\)
C.	\(\frac{1}{{1 + {x^2}}}\)
D.	\(1 + {x^2}\)
Answer» C. \(\frac{1}{{1 + {x^2}}}\)

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Find the differentiation of \({\cos ^{ - 1}}x\)

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