Which Formula Is the Sinusoidal Form $f(t)=\sin t+\cos t$
A) $\sqrt{2} \sin \left(t-\frac{\pi}{4}\right)$

Multiple Choice

Which formula is the sinusoidal form $f(t) =\sin t+\cos t$ .

A) $\sqrt{2} \sin \left(t-\frac{\pi}{4}\right)$
B) $\frac{\sqrt{2}}{2} \sin \left(t-\frac{\pi}{4}\right)$
C) $\sqrt{2} \sin \left(t+\frac{\pi}{4}\right)$
D) $\sqrt{2}+\sin \left(t-\frac{\pi}{4}\right)$