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JEE Main & Advanced Mathematics Trigonometric Identities Question Bank Fundamental trigonometrical ratios and functions, Trigonometrical ratio of allied angles

  • question_answer
    \[\tan \theta \sin \left( \frac{\pi }{2}+\theta  \right)\cos \left( \frac{\pi }{2}-\theta  \right)=\] [EAMCET 1981]

    A) 1

    B) 0

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

    D) None of these

    Correct Answer: D

    Solution :

    \[\tan \theta \cos \theta \sin \theta ={{\sin }^{2}}\theta \].


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