If (sinalpha)x^2-2x+bgeq2 for all real v...

If `(sinalpha)x^2-2x+bgeq2` for all real values of `xlt=1a n dalpha in (0,pi/2)uu(pi/2,pi)` , then the possible real values of `b` is/are 2 (b) 3 (c) 4 (d) 5

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If (sinalpha)x^2-2x+bgeq2, for all real values of xlt=1a n dalpha in (0,pi/2)uu(pi//2,pi), then possible real value of b is /are a2 b. 3 c. 4 d. 5

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