Number of solutions of the equation sin^...

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

A

`(3pi)/(4)`

B

`2pi`

C

`4pi`

D

`6pi`

Verified by Experts

The correct Answer is:

D

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