Graph of Sine and Cosine Function.

I just come up with the idea to momerize the graph of Sine function and Cosine function.

It is fairly easy for student to recollect that these function has wavy shape.
The harder part was apparently the distinction between these two function.
Guess which one is y=sin(x)?

Imagine the capital letter S of sine and C of cosine rotated 90 degrees.
Here is the answer.
The blue one is S, and the red one is C.