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Number of solutions of the equation `sin^4x-cos^2xsinx+2sin^2x+sinx=0in0lt=xlt=3pi` is_____

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Knowledge Check

  • The number of solutions of the equation sinx-sin2x+sin3x=2cos^(2)x-cosx" in "(0,pi) is

    A
    1
    B
    3
    C
    2
    D
    4

  • The number of solutions of the equation sin2x-2cosx+4sinx=4 in the interval [0,5pi] is

    A
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    B
    5
    C
    4
    D
    6

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