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  3. 10th Class
  4. Mathematics
  5. Introduction to Trigonometry

10th Class Mathematics Introduction to Trigonometry Question Bank Trigonometry

  • question_answer
    \[{{\cos }^{4}}A-{{\sin }^{4}}A\] is equal to

    A) \[\sin 2A\]

    B) \[-\sin 2A\]

    C) \[\cos \,2A\]

    D) \[-\cos \,2A\]

    Correct Answer: C

    Solution :

     Not available


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