The equation `(cosp-1)x^2 + cosp.x+ sinp=0` in x has real roots. Then the set of values of p is (a)[0,2`pi`] (b)[-`pi`,0] (c)`[-pi/2,pi/2]` (d)`[0,pi]`

The equation (cosp-1)x^2+(cos p)x+sin p=0 in the variable x has real roots. The p can take any value in the interval (a) (0,2pi) (b) (-pi,0) (c) (-pi/2,pi/2) (d) (0,pi)

The equation (cosp-1)x^2+(cos p)x+sin p=0 in the variable x has real roots. The p can take any value in the interval (a) (0,2pi) (b) (-pi,0) (c) (-pi/2,pi/2) (d) (0,pi)

The equation (cosp-1)x^2+(cos p)x+sin p=0 in the variable x has real roots. The p can take any value in the interval (a) (0,2pi) (b) (-pi,0) (c) (-pi/2,pi/2) (d) (0,pi)

The equation (cos p-1)x^(2)+(cos p)x+sin p=0 in the variable x has real roots.The p can take any value in the interval (a) ( 0,2 pi)( b) (-pi,0) (c) (-(pi)/(2),(pi)/(2))( d )(0,pi)

The equation (cosP-1)x^(2)+(cosP)x+sinP=0 where x is a variable has real roots. Then the interval of may be of the following :

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 :

To the equation 2^(2pi//cos^(-1)x)-(a+1/2)2^(pi//cos^(-1)x)-a^(2)=0 has only real root, then

If |cot x+ cosec x|=|cot x|+ |cosec x|, x in [0,2pi], then complete set of values of x is : (a).[0,pi] (b).(0, (pi)/(2)] (c).(0,(pi)/(2)]uu[(3pi)/(2), 2pi) (d).(pi, (3pi)/(2)]uu[(7pi)/(4), 2pi]