- #1
jegues
- 1,097
- 3
I'm just curious about the,
[tex]sin(a\pm b), \quad cos(a\pm b)[/tex]
identities, is there a simple way to derive them?
I have a test in a few days and I don't like memorizing too much.
Thanks again!
[tex]sin(a\pm b), \quad cos(a\pm b)[/tex]
identities, is there a simple way to derive them?
I have a test in a few days and I don't like memorizing too much.
Thanks again!