Triangle Calculator
Solve any triangle - find missing sides and angles
💡 Enter at least 3 values (sides and/or angles). The calculator will find the rest!
Sides
Angles (degrees)
Formula
Law of Sines
a/sin(A) = b/sin(B) = c/sin(C)
Law of Cosines
c² = a² + b² - 2ab·cos(C)
Heron's Formula (Area)
Area = √(s(s-a)(s-b)(s-c)), where s = (a+b+c)/2
Angle Sum
A + B + C = 180°