Use identities to find each exact value. See
Chapter 5, Problem 19(choose chapter or problem)
Use identities to find each exact value. See Example 1. sin 76_ cos 31_ - cos 76_ sin 31_
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer