Find the Limit $$\lim _ { \theta \rightarrow 0 } 4 \frac { \sin ( \sin 4 \theta ) } { \sec 4 \theta }$$

Short Answer

Find the limit.
$$\lim _ { \theta \rightarrow 0 } 4 \frac { \sin ( \sin 4 \theta ) } { \sec 4 \theta }$$