Uh... I think trig is sprinkled here and there in the 4U course.
- Graphs tend to have trig identities in the f(x) form and ask you to manipulate f(x) from there
- Complex uses trig to use mod/arg forms when representing complex numbers
- Conics use trig indentities to form the parametric equations of ellipses and hyperbolas
- Polynomials... Don't use trig, I think
![Er... what? o_O o_O](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Anyone wanna confirm this?
- Integration features harder trig integration questions and using trig to integrate probs
- Volumes use integration... Which uses trig
- Mechanics use application of trig to the real world. I guess that's a way of putting it >.>;
- Haven't done harder 3U yet, but I'm guessing there's more trig stuff there
Seriously tho, IMO no topic is solely devoted to trig, so you should be fine. I find that most of the time, I'm just changing one trig identity to another format or another identity, or just using the integrating/differentiating trig identities.