Simplify each of the following. cos2 15 - sin2 15
Chapter 5, Problem 5.1.200(choose chapter or problem)
Simplify each of the following. cos2 15 - sin2 15
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