Evaluate the sine, cosine, and tangent for an angle using special right triangles

The video tutorial covers the basics of trigonometric functions, focusing on sine, cosine, and tangent. It explains how to identify π/4 and its position in the first quadrant, equating it to 45 degrees. The tutorial discusses the 45-45-90 triangle relationships and demonstrates how to calculate sine, cosine, and tangent for π/4. Finally, it verifies these calculations using the unit circle, emphasizing the relationship between trigonometric functions and coordinates.

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