Trigonometric Identities and Equations

Expressions containing both logarithmic and trigonometric functions

Verifying Trigonometric Identities

How to verify trig identities with natural logs

Sum and Difference Identities for Sine and Cosine

Using Double Angle Identities to Solve Equations, Example 2

Sum and Difference Identities to Simplify an Expression, Example 2

Using Double Angle Identities to Solve Equations, Example 3

Proving an Identity - Other Examples, Example 1

Using Logarithms and Trigonometric Identities

Trigonometric Identities to Evaluate Expressions - Part 2 of 2 (Half Angle Identity)

Identities for Sum and Differences of Sine and Cosine, Example 2

Half Angle Identities to Evaluate Trigonometric Expressions, Example 2

Sum and Difference Identities to Simplify an Expression, Example 1

Sum and Difference Identities to Simplify an Expression, Example 3

Verifying Trigonometric Identities (Examples)

Deriving Trigonometric Identies from Known Identities

Identities for Sum and Differences of Sine and Cosine, Example 3

Proving Trigonometric Identities - Logarithms with Trigonometric Proving

Identities for Sum and Differences of Sine and Cosine, Example 1

Simplifying Trigonometric Expressions Using Identities, Example 1

Trigonometric Identities to Evaluate Expressions - Part 1 of 2 (Sum and Difference Identity)

Simplifying Trigonometric Expressions Using Identities, Example 3

Sum and Difference Identities for Sine and Cosine, Example 2

Using the Sum and Difference Identities for Sine, Cosine and Tangent, Ex 1

Half Angle Identities to Evaluate Trigonometric Expressions, Example 1

Trigonometric Identities: How to Derive / Remember Them - Part 2 of 3

Cofunction Identities, Example 2

Verifying Trigonometric Identities:  The Fundamental Identities

Trigonometric Identities: How to Derive / Remember Them - Part 1 of 3

Verifying Trigonometric Identities Using the Fundamental Identities and Properties of Logarithms

Proving some Random Trigonometric Identities

Using the Sum and Difference Identities for Sine, Cosine and Tangent, Ex 2

Proving an Identity - Other Examples, Example 2

Proving an Identity, Example 2

Proving an Identity, Example 1

Verify the Trig Identity - Uses Pythagorean Identities

Using Double Angle Identities to Solve Equations, Example 1

Trigonometric Identities: How to Derive / Remember Them - Part 3 of 3

Half Angle Identities to Evaluate Trigonometric Expressions, Example 3

This course covers topics including trigonometric functions (with graphs and inverse functions), identities and equations, solutions of triangles, complex numbers and more.

College Trigonometry

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Angles and the Trigonometric Functions

Trigonometric Functions graphs, Inverse Trigonometric Functions

Laws of Sines, Cosines and Vectors

Complex Numbers, Polar Coordinates and Parametric Equations

Product-to-Sum Formulas

Sum-to-Product Formulas

Product-to-Sum and Sum-to-Product Formulas

Double-Angle Formulas

Power-Reducing Formulas

Use the Half-Angle Formulas

Double-Angle, Power-Reducing, and Half-Angle Formulas

Formula for the cosine and the difference of two angles

Sum and Difference Formulas for Cosines and Sines

Sum and Difference Formulas for Tangents

Sum and Difference Formulas

Fundamental Trigonometric Identities to Verify Identities

Find All Solutions of a Trigonometric Equation

Solve Equations with Multiple Angles

Solve Trigonometric Equations Quadratic in Form

Factoring to Separate Different Functions in Trigonometric Equations

Identities to Solve Trigonometric Equations

Calculator to Solve Trigonometric Equations

Solve equations with trigonometric and exponential or logarithmic functions

Trigonometric Equations

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