**In this unit, students will:**

- Build upon their work with trigonometric identities with addition and subtraction formulas.
- Will look at addition and subtraction formulas geometrically.
- Prove addition and subtraction formulas.
- Use addition and subtraction formulas to solve problems.

**Pre-requisite skills:**

https://cobbteachingandlearningsystem.cobbk12.org/GetFile.aspx?f=c99ba0eb-8eff-7cf9-0543-42942a5b2e0f&t=v

**Sample Assessment:**

https://cobbteachingandlearningsystem.cobbk12.org/GetFile.aspx?f=891d83e8-9cd3-50c8-31db-1a594a62d624&t=v