The area of region bounded by the x-axis, $y=cos\, x$ and $y=sin\, x. 0≤x≤\frac{\pi}{2}$

$\sqrt{2}$ sq.units $(2\sqrt{2}-2)$ sq.units $(\sqrt{2}-1)$ sq.units $(\sqrt{2}+1)$ sq.units

$\sqrt{2}$ sq.units