MCQ
यदि $x \in[-1,1]$, तब $\cos \left(\cos ^{-1} x\right)=$
  • x
  • B
    $\frac{1}{x}$
  • C
    $x^2$
  • D
    $\frac{1}{x^2}$

Answer

Correct option: A.
x
A

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