How do you graph y=sin(x + (pi/2) )?

May 28, 2015

The above answer is correct, but luckily for us, there's already another function for this: cosine!

The cosine function is just the sine function shifted over by $\frac{\pi}{2}$!

Sine function:
graph{sin(x) [-10, 10, -5, 5]}
Cosine function:
graph{cos(x) [-10, 10, -5, 5]}

If $y = \sin \left(x + \frac{\pi}{2}\right)$, then $y = \cos \left(x\right)$