Find the value of tan 4° tan 43° tan 47° tan 86°.
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    Subject
    Quantitative Aptitude

    Class

    SSCCGL Class 12

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    SSCCGL Quantitative Aptitude Solved Question Paper 2015

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    150.

    Find the value of tan 4° tan 43° tan 47° tan 86°.

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    A.

    1

    tan 4° tan 43° tan 47° tan 86° = ?
     = tan (90° - 86°). tan (90° - 47°). tan 47° tan 86°
     = cot 86°. cot 47°. tan 47° tan 86° = 1 [tanθ. cot θ] = 1


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