Sine Calculator
Formula: sin(θ) = opposite / hypotenuse
Example: sin(30°) = 0.5
Cosine Calculator
Formula: cos(θ) = adjacent / hypotenuse
Example: cos(60°) = 0.5
Tangent Calculator
Formula: tan(θ) = opposite / adjacent
Example: tan(45°) = 1
Law of Sines
Formula: a/sin(A) = b/sin(B) = c/sin(C)
Enter two angles (in degrees) and one side:
Law of Cosines
Formula: c² = a² + b² – 2ab·cos(C)
Example: Enter sides a, b and included angle C to find side c
Trigonometric Identity Checker
Example: sin²(x) + cos²(x) = 1 is always true
Note: Basic checker that evaluates at x = 45° (π/4)