Law of Cosines Calculator
Calculate unknown sides and angles of any triangle using the Law of Cosines formula.
Results:
Angle α: 0°
Angle β: 0°
Angle γ: 0°
Understanding the Law of Cosines
The Law of Cosines is a fundamental theorem in trigonometry that relates the lengths of the sides of a triangle to the cosine of one of its angles. It's especially useful when dealing with non-right triangles.
Key Formulas
- c² = a² + b² - 2ab cos(γ)
- b² = a² + c² - 2ac cos(β)
- a² = b² + c² - 2bc cos(α)