Trig Identities

Trig Identities: Suggested Learning Order

1. Proving the Reciprocal and Quotient Identities
2. Simplifying Trig Expressions Using the Reciprocal and Quotient Identities
3. Proving the Pythagorean Trig Identities
4. Simplifying Trigonometric Expressions Using the Pythagorean Trig Identities
5. Verifying Trig Identities Using the Fundamental Trig Identities
6. Verifying Trig Identities Using the Pythagorean Identities, Hard
7. How Do You Prove Odd/Even Trig Identities?
8. How Do You Verify Trig Identities Using the Odd and Even Trig Identities
9. Proving the Cofunction Trig Identities
10. Verifying Trig Identities Using the Cofunction Trig Identities
11. Deriving the Sum and Difference Formulas for Sine and Cosine
12. Proving the Sum and Difference Formulas for Tangent and Cotangent
13. Verifying Trig Identities Using the Sum and Difference Formulas
14. Finding the Exact Value of Trig Functions Involving Inverse Trig Functions Using the Sum Identities
15. Proving the Double-Angle Trig Identities for Sine, Cosine, and Tangent
16. Using the Double-Angle Identities to Verify Other Trig Identities
17. Proving the Power-Reducing and Half-Angle Trig Identities
18. Power Reducing Formulas! Rewrite each Expression Using Trig Identities
19. Using Half-Angel Identities to Find the Exact Value of Trig Expressions
20. Proving the Product-to-Sum Formulas
21. How to Use the Product-to-Sum Identities to Rewrite Trig Expressions
22. Proving the Sum-to-Product Formulas for Sine
23. Proving the Sum-to-Product Formulas for Cosine
24. Using the Sum-to-Product Identities to Solve Trig Equations
25. Prove that a Trig Equation is NOT an Identity.

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