TRIGONOMETRY
Trigonometry begins with the study of triangles and the three primary trig ratios, name sine, cosine and tangent.
- Sine, Cosine and Tangent – Math is Fun site
- Sine, Cos and Tan – explanations and sample questions
- Math Help Video
- Basic Trigonometry – Khan Academy Video
… Why didn’t sine and tangent go to the party? … Just cos …