2. Questions Bank
  3. JEE Main & Advanced
  4. Mathematics
  5. Complex Numbers and Quadratic Equations

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

  • question_answer
    If \[1,\omega ,{{\omega }^{2}}\] are the cube roots of unity, then their product is [Karnataka CET 1999, 2001]

    A) 0

    B) \[\omega \]

    C) - 1

    D) 1

    Correct Answer: D

    Solution :

      \[1.\,\omega \,.\,{{\omega }^{2}}={{\omega }^{3}}=1.\]


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