# Math Help - Changing functions in between sine/cosine

1. ## Changing functions in between sine/cosine

Change 2sin(1/2x-2) to a cosine function.

Change cos(1/4x+1) + 2 to a sine function.

Thanks for any help!

2. Originally Posted by live_laugh_luv27
Change 2sin(1/2x-2) to a cosine function.

Change cos(1/4x+1) + 2 to a sine function.

Thanks for any help!
You can use the basic property $\sin(\frac{\pi}{2}-\theta)=\cos(\theta)$. This is also true if you switch the cos and sin.