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The equation (cosp - 1)x^(2) + (cosp)x +...

The equation `(cosp - 1)x^(2) + (cosp)x + sinp = 0`, where x is a variable, has real roots. Then the interval of p may be any one of the following :

A

`[o, 2pi]`

B

`[-pi, 0]`

C

`[-pi/2,pi/2]`

D

`[0, pi].`

Text Solution

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The correct Answer is:
D
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