Add the following terms to your copy of Glossary Terms:
- verification
- trigonometric identity
- reciprocal identity
- quotient identity
- Pythagorean identity
Add the following formulas to your copy of Formula Sheet:
- sin2 θ + cos2 θ = 1
- 1 + tan2 θ = sec2 θ
- 1 + cot2 θ = csc2 θ