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If sin^(2)x - (m - 3)sin x + m=0 "has r...

If `sin^(2)x` - (m - 3)sin x + m=0 "has real roots then which of the following is/are correct"

A

Number of roots of equation in `[-2pi,2pi]is 2 for m=1`

B

Number of roots of equation in `[-2pi,2pi]is 1 for m=9`

C

Roots are real for `m le 1`

D

If sin x =t then `t^(2)-(m-3)t+m=0` can not have both roots in [-1,1]`

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The correct Answer is:
A, C, D
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