JEE Main & Advanced Mathematics Functions Question Bank Functions

  • question_answer
    If \[f(x)=\frac{1-x}{1+x},\] the  n \[f[f(\cos \ 2\theta )]=\] [MP PET 1994, 2001; Pb. CET 2002]

    A)            \[\tan 2\theta \]

    B)            \[\sec 2\theta \]

    C)            \[\cos 2\theta \]

    D)            \[\cot 2\theta \]

    Correct Answer: C

    Solution :


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