Question

HEY MATE

plz solve this fast



the equation
$sin^{2} x - 2 sinx +a =0$

will have at least one real root if

1] a ∈ [ -3,1]
2] a ∈ [-1 ,1]
3] a ∈ [ 0 ,1]
4] none of these



FULL EXPLANATION NEEDED
fast..........

Answer 1

Step-by-step explanation:

which is required ans.