Consider the curve defined parametrically by \(x=\sin t-\cos t\) and \(y=\sin t+\cos t\) (A) Find the length of the curve from \(\frac{\pi }{4}\leq t\leq \frac{\pi }{2}\) . (B) Find the area bounded underneath the curve from \(\frac{\pi }{4}\leq t\leq \frac{\pi }{2}\) (C) Find the area of the surface generated by revolving about the x-axis the parametric curve defined from \(\frac{\pi }{4}\leq t\leq \frac{\pi }{2}