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JEE Main & Advanced Mathematics Trigonometric Identities Question Bank Numerical Value Type Questions - Trigonometric Functions

  • question_answer
    If \[si{{n}^{4}}\alpha +4{{\cos }^{4}}\beta +2=4\sqrt{2}\sin \alpha \cos \beta ;\]\[\alpha ,\beta \in [0,\pi ],\] and \[\cos (\alpha +\beta )-cos(\alpha -\beta )=-\sqrt{a},\] then a is

    Answer:

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