The function \( f(x)=\sin ^{-1}(\cos x) \) is (A) discontinuous at \( x=0 \). (B) continuous at ...

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The function \( f(x)=\sin ^{-1}(\cos x) \) is
(A) discontinuous at \( x=0 \).
(B) continuous at \( x=0 \).
(C) differentiable at \( x=0 \).
(D) None of these
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