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JEE Main & Advanced Mathematics Complex Numbers and Quadratic Equations Question Bank Conjugate, Modulus and Argument of complex number

  • question_answer
    Let \[z\] be a complex number. Then the angle between vectors \[z\] and \[-iz\] is

    A) \[\pi \]

    B) 0

    C) \[-\frac{\pi }{2}\]

    D) None of these

    Correct Answer: C

    Solution :

    Since the multiplication of a complex number by \[-i\] rotates through it by a right angle in negative (clockwise) direction.


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