If x=sin−1⁡(sin⁡10) and y=cos−1⁡(cos⁡10), then y - x is equal to

The graph of y = sin-1 (sin x) is∴x=sin−1⁡(sin⁡10)=−10+3π  ....(i)and the graph of y = cos-1(cos x) is ∴y=cos−1⁡(cos⁡10)=−10+4π  ...(ii)Now, from Eqs. (i) and (ii),y−x=(−10+4π)−(−10+3π)=π