Documents and summaries can be found on Scribd .
While official digital "guides" are limited, you can find the textbook and related materials through several library and archival resources: modern algebra and trigonometry vance pdf top
| Resource | Format | Cost | Similar to Vance? | |----------|--------|------|-------------------| | Precalculus by Stitz & Zeager | Free PDF (OpenStax) | $0 | Less rigorous, more examples | | Trigonometry by Michael Corral | Free PDF (mechon-mamre.org) | $0 | Excellent, but covers only trig | | Algebra by Artin (parts) | Not free | High | Too abstract for precalc | | Forall X: Calgary (logic book) | Free | $0 | Not trig, but same clean style | Documents and summaries can be found on Scribd