Sum and Difference Identities & Formulas - Sine, Cosine, Tangent - Degrees & Radians, Trigon
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:
https://www.youtube.com/watch?v=cSKAqfGXOPI
Two Triangle Problems - More Examples:
https://www.youtube.com/watch?v=QM1T6eL8t48
Verifying Trigonometric Identities:
https://www.youtube.com/watch?v=Rf05H8ogHLg
Double Angle Identities:
https://www.youtube.com/watch?v=SE5SBTgrwH8
Verifying Trig Identities With Double Angles:
https://www.youtube.com/watch?v=Wh7hM_FsN3Y
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Half Angle Formulas:
https://www.youtube.com/watch?v=9YI69okba3c
Verifying Trig Identities Using Half Angles:
https://www.youtube.com/watch?v=qWJ4HwJ_5LY
Inverse Trig Functions With Double Angles:
https://www.youtube.com/watch?v=waDbbpib9cM
Right Triangle Trig With Half Angle Identities:
https://www.youtube.com/watch?v=vEU25NlpaXA
Product To Sum + Sum to Product Formulas:
https://www.youtube.com/watch?v=8Prc7VGt40w
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Solving Trig Equations - Finding All Solutions:
https://www.youtube.com/watch?v=kEcbxiLeGTc
Solving Trig Equations With Multiple Angles:
https://www.youtube.com/watch?v=eZPEW2hVUd0
Solving Trig Equations With Double Angles:
https://www.youtube.com/watch?v=-R7394Dn854
Trigonometry Final Exam Review:
https://www.youtube.com/watch?v=OAsbx4TEnL0
Final Exams and Video Playlists:
https://www.video-tutor.net/
Full-Length Videos and Worksheets:
https://www.patreon.com/MathSc....ienceTutor/collectio