- #1
courtrigrad
- 1,236
- 2
Hello all
In my textbook I encountered the following problem:
Find the six trigonometric values of cos^ -1 (3/7). They must be exact. I gather what they mean is that I find arccos (3/7). I tried applying basic identities, but didn't work. Any help would be appreciated.
Thanks
In my textbook I encountered the following problem:
Find the six trigonometric values of cos^ -1 (3/7). They must be exact. I gather what they mean is that I find arccos (3/7). I tried applying basic identities, but didn't work. Any help would be appreciated.
Thanks