If sin6$$\theta$$ + sin4$$\theta$$ + sin2$$\theta$$ = 0, then general value of $$\theta$$ is

The equation $$\sin x(\sin x + \cos x) = k$$ has real solutions, where k is a real number. Then,

The order of the differential equation of all parabolas whose axis of symmetry along X-axis is

The area enclosed by $$y = \sqrt {5 - {x^2}} $$ and $$y = |x - 1|$$ is