Use a Sum or Difference Identity to Find the Exact $$\frac { \sec \theta \sin \theta } { \tan \theta } - 1$$

Multiple Choice

Use a sum or difference identity to find the exact value.
- $$\frac { \sec \theta \sin \theta } { \tan \theta } - 1$$

A) 0
B) $- \sec ^ { 2 } \theta$
C) 1
D) $1 - \sin \theta$