JEE Main & Advanced Mathematics Complex Numbers and Quadratic Equations Question Bank De Moivre's theorem and Roots of unity

  • question_answer
    The value of \[\sec h(i\pi )\] is [RPET 1999]

    A) - 1

    B) i

    C) 0

    D) 1

    Correct Answer: A

    Solution :

    \[\sec \text{h}\,(i\,\pi )\]\[=\,\sec \,({{i}^{2}}\pi )\]\[=\sec (-\,\pi )\]\[=\,\sec \,\pi =-1\].


You need to login to perform this action.
You will be redirected in 3 sec spinner