MATH 140 - Pre-calculus

Chapter 5 Videos

Section 1 Trigonometric
Identities

Worksheet

Section 2
Sum and Difference Formulas

Examples

Worksheet

Examples Worksheet

Section 3 Double-Angle,
Power-Reducing and Half-Angle Formulas and
Examples

Worksheet

Examples Worksheet

Section 4 Product to Sum and Sum to Product Formulas
and Examples

Worksheet

Section 5 Trigonometric
Equations

Worksheet

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Student Requested Problems

Rewrite the Expression (cos and cot) 5-1-71

Verify that the Equation is an Identity and Use Substitution 5-2-51

Using Half Angle Identity in a Proof 5-3-63

Doing Identity From a Graph 5-3-69

Solving Identity From a Graph 5-3-77