Determine the derivative of $f(g(x))$ where $f(x)=\sin(x)$ and $g(x)=x^2+4$.

Lesson Parent: 
Problem: 

Determine the derivative of $f(g(x))$ where $f(x)=\sin(x)$ and $g(x)=x^2+4$.

Answer: 

\[\frac{d}{dx}f(g(x))=2x\,\cos(x^2+4)\]