JEE Main & Advanced
Mathematics
Trigonometric Equations
Question Bank
Numerical Value Type Questions - Trigonometric Equation
question_answer
If \[{{\sin }^{4}}x-{{\cos }^{2}}x\,\,\sin x+2{{\sin }^{2}}x+\sin x=0,\] \[\forall \,\,x\,\,\in \,\,\left[ 0,3\pi \right]\] then find number of solutions.