I've just realized I have serious trouble with trigonometric identities, and the C2 exam is in two days. My textbook does not cover them much. Can anyone help?
What are trigonometric identities? watch
- Thread Starter
- 23-05-2016 17:54
Last edited by B_9710; 23-05-2016 at 19:50.
- 23-05-2016 18:03