If the roots of the given equation (cosp...

If the roots of the given equation `(cosp-1)x^2+(cosp)x+sinp=0` are real if

A

` p in (-pi , 0 )`

B

`p in (- (pi)/(2), (pi)/(2))`

C

`p in (0, pi)`

D

`p in (0,2 pi)`

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The correct Answer is:

C

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