Graph each of the following trig functions. 

1. $y=2\sin(x)$ and $y=\cos(x)$ on the same set of axes.

   Hint (a):

   Review the Math Notes box in Lesson 9.2.4.

2. Use your answer to part (a) to graph $y=2\sin(x)+\cos(x)$.

   Hint (b):

   Try adding and then graphing the $y$-values of each function for each $\frac{\pi}{2}$ multiple of $x$.