Mark the Correct alternative in the following:
The number of values of x in [0, 2π] that satisfy the equation 
1-cos2x-cos x-0.25=0
Solving the quadratic equation, we get
Cos x = 0.5
So x= 60° or 300°
Hence there are 2 values
Option B
1
Mark the Correct alternative in the following:
The number of values of x in [0, 2π] that satisfy the equation
1-cos2x-cos x-0.25=0
Solving the quadratic equation, we get
Cos x = 0.5
So x= 60° or 300°
Hence there are 2 values
Option B