Thread: sin and cos graph

Graph graph y=sinx and y=cos(x+pi/2) over the interval [-2pi,2pi]
-What do you notice?
-Why does this make sense?

Thanks

Originally Posted by johett

Graph graph y=sinx and y=cos(x+pi/2) over the interval [-2pi,2pi]
-What do you notice?
-Why does this make sense?

Thanks

you get one graph by reflecting the other in the y-axis. here's a pic

now what can you say?