ASA Triangle
Solve any ASA triangle with our free calculator. Enter two angles and the included side to find the missing angle and remaining sides using the law of sines.
About This Calculator
Use this free online ASA triangle calculator to solve any angle-side-angle triangle quickly. Enter two angles and the included side, and get the missing angle, the remaining two sides, and a complete triangle solution using the law of sines. Perfect for students, engineers, architects, and anyone working with trigonometry.
Frequently Asked Questions
How do I use the ASA triangle calculator?
Enter two angles (A and C) and the length of the included side b. The calculator will automatically compute the missing angle B and the remaining sides a and c using the law of sines.
What does ASA stand for in triangle solving?
ASA stands for Angle-Side-Angle. It means you know two angles and the side between them. This is one of the standard triangle congruence criteria that uniquely determines a triangle.
Can the calculator handle any angle values?
The two known angles must be positive and their sum must be less than 180 degrees, since the three interior angles of a triangle always add up to 180 degrees. The side length must also be positive.
Is this ASA triangle solver free to use?
Yes, all calculators on Calculy are completely free to use with no registration or hidden fees. You can solve unlimited ASA triangles online instantly.
What formula does the ASA calculator use?
The calculator uses the law of sines: a/sin(A) = b/sin(B) = c/sin(C). First, angle B is found as 180 - A - C, then sides a and c are computed using the known side b and the sine ratios.