The Six Trigonometric Functions, Basic Introduction, Trigonometry

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This trigonometry video tutorial provides a basic introduction into the six trigonometric functions such as sine, cosine, tangent, cotangent, secant, and cosecant. It provides the equations and formulas associated with these trigonometric functions as they relate to the unit circle.

Trigonometry - Basic Introduction:


The Unit Circle:


How To Remember The Unit Circle Fast:


Reference Angles:


How To Solve Right Triangles:


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Reciprocal Identities:


Quotient Identities:


Even and Odd Trigonometric Identities:


Pythagorean Identities:


The Pythagorean Theorem:


Trig Functions - Periodic Properties:


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The Exact Value of Trig Functions:


Special Right Triangles - 30 60 90:


Special Patterns - Pythagorean Theorem:


Cofunction Identities:


Final Exams and Video Playlists:


Full-Length Videos and Worksheets:


Trigonometry Formula Sheet: