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Understanding Trigonometry Functions
Basic Trigonometric Ratios
Trigonometry is based on the relationships between the sides and angles of right triangles:
- Sine (sin θ) = Opposite / Hypotenuse
- Cosine (cos θ) = Adjacent / Hypotenuse
- Tangent (tan θ) = Opposite / Adjacent
- Cotangent (cot θ) = Adjacent / Opposite = 1/tan θ
Common Angles to Remember
Some angles appear frequently in trigonometry problems:
- 0° - Basic starting point
- 30° - One-third of a right angle
- 45° - Half of a right angle
- 60° - Two-thirds of a right angle
- 90° - A right angle