45-45-90 Triangles, Special Right Triangle Trigonometry

This trigonometry video tutorial provides a basic introduction into 45-45-90 triangles. It explains how to evaluate trigonometric functions such as sine and cosine using special reference triangles.

Trigonometry – Free Formula Sheet: https://www.video-tutor.net/formula-sheets.html

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Trigonometry – Basic Introduction:

The Unit Circle:

How To Remember The Unit Circle Fast:

Reference Angles:

The Six Trigonometric Functions:

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:
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