The equaton (cos p - 1) x^(2) + x (cos p...

The equaton (cos p - 1) `x^(2) + x` (cos p ) + sin p = 0 in the veriable x, has real roots then p can take any value in the interval :

A

`(0,2pi)`

B

`(-pi,0)`

C

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

D

`(0, pi)`

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The correct Answer is:

D

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