Question

The sum of angles that satisfy the equation 2 sin^2x -sinx + cosx - sin2x = 0

Answer 1

Answer:

given $$4sin2x+cosx=5$$

inorder the equation has a solution sin2x and $$cosx$$ must be 1 at the same time since max value of sin and cos are 1

therefore cosx=1 at 0 but sin is 0 at 0, therefore, it has no solution