SOLUTION: How do I add a value to the inside of a cos or sin function? ie, I have cos(t) and I have to have it in the format of cos(t+2).

Algebra ->  Trigonometry-basics -> SOLUTION: How do I add a value to the inside of a cos or sin function? ie, I have cos(t) and I have to have it in the format of cos(t+2).      Log On


   

Question 370017: How do I add a value to the inside of a cos or sin function?
ie, I have cos(t) and I have to have it in the format of cos(t+2).
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
You can use the idea that cos%28x%2By%29=cos%28x%29cos%28y%29-sin%28x%29sin%28y%29


So in your case, cos%28t%2B2%29=cos%28t%29cos%282%29-sin%28t%29sin%282%29