The equation  3sin2⁡x+10cos⁡x−6=0 is satisfied, if

The equation  3sin2x+10cosx6=0 is satisfied, if

  1. A

    x=±cos113

  2. B

    x=2±cos113

  3. C

    x=±cos116

  4. D

    x=2±cos116

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    Solution:

    We have,3sin2x+10cosx6=0

        (cosx3)(3cosx1)=0    cosx3 or cosx=13    x=2±cos113

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