This trigonometry video tutorial explains how to use the sum and difference identities / formulas to evaluate sine, cosine, and tangent functions that have angles that are not commonly found in the unit circle. Examples include angles both in degrees and radians.

Bearing Problems and Navigation:
   • Bearing Problems & Navigation  

Two Triangle Problems - More Examples:
   • Trigonometry - How To Solve Right Tri...  

Verifying Trigonometric Identities:
   • Verifying Trigonometric Identities  

Double Angle Identities:
   • Double Angle Identities & Formulas of...  

Verifying Trig Identities With Double Angles:
   • Verifying Trigonometric Identities Wi...  

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Half Angle Formulas:
   • Half Angle Formulas & Identities - Ev...  

Verifying Trig Identities Using Half Angles:
   • Verifying Trigonometric Identities Us...  

Inverse Trig Functions With Double Angles:
   • Inverse Trig Functions With Double An...  

Right Triangle Trig With Half Angle Identities:
   • Right Triangle Trigonometry and Half ...  

Product To Sum + Sum to Product Formulas:
   • Product To Sum Identities and Sum To ...  

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Solving Trig Equations - Finding All Solutions:
   • Solving Trigonometric Equations By Fi...  

Solving Trig Equations With Multiple Angles:
   • How To Solve Trigonometric Equations ...  

Solving Trig Equations With Double Angles:
   • Solving Trigonometric Equations By Fa...  

Trigonometry Final Exam Review:
   • Trigonometry Final Exam Review  

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