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

10th Class Mathematics Introduction to Trigonometry Question Bank Trigonometry

  • question_answer
    If \[\alpha +\beta =90{}^\circ \] and \[\alpha =2\beta \], then \[{{\cos }^{2}}\alpha +{{\sin }^{2}}\beta \] is

    A) 1

    B) 0

    C) \[\frac{1}{2}\]

    D) 2

    Correct Answer: C

    Solution :

    Not available


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