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  5. Introduction to Trigonometry

10th Class Mathematics Introduction to Trigonometry Question Bank Trigonometry

  • question_answer
    The value of \[{{\cos }^{4}}\theta +{{\sin }^{4}}\theta +2{{\cos }^{2}}\theta {{\sin }^{2}}\theta \] when \[\theta =45{}^\circ \] is

    A) 1

    B) 2

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

    D) \[2\sqrt{2}\]

    Correct Answer: A

    Solution :

    Not available


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