Sum and Difference Identities & Formulas - Sine, Cosine, Tangent - Degrees & Radians, Trigonometry

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.

Trigonometry - Free Formula Sheet:
https://bit.ly/47diggI

Trigonometry Final Exam Review:
   • Trigonometry Final Exam Review  

_________________________________
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...  

__________________________
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 ...  

______________________________
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  

Final Exams and Video Playlists:
https://www.video-tutor.net/

Full-Length Videos and Worksheets:
  / collections