Here are a couple of questions some guidance would be helpful.

3. (15 points) Starting with the formula cos (2A) = 1 - 2 sin A clearly explain each step to show that 1 - cos e sin = #1 25. (15 points) Prove the Law of Sines sin A sin C a C by writing h in two different ways, then combining, and then simplifying into the answer above. B A C b