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Sin, Cos, Tan Quiz
| Term | Definition |
|---|---|
| The Sine Ratio (sin) | sin θ = opposite/hypotenuse |
| The Cosine Ratio (Cos) | cos θ = adjacent/hypotenuse |
| The Tangent Ratio (tan) | tan θ = opposite/adjacent |
| Special Triangle Exact Values | Sine: 0, 1/2, radical 2/2, radical 3/2, 1 Cosine: The inverse |
| Cofunction Relationship | sin θ = cos (90 - θ) |
| Pythagorean Identity | (cos θ) squared + (sin θ) squared = 1 |
| Tangent Quotient Identity | tan θ = sin θ/cos θ |
| Area of a Triangle | 1/2ab sinC |
| Law of Cosines | c2 = a2 + b2 - 2ab (cosC) |
| Law of Sines | Sin A/a = SinB/b = SinC/c |
| Vector | a ray with direction and magnitude |
| Magnitude | the power of a force, represented by the length of the ray |
| Resultant | the resulting vector from combining 2 other forces, the diagonal of the parallelogram, formed by forces drawn from the object to the opposite angle of the parallelogram |