Use this triangle law of sines calculator to calculate triangle angles with law of sines or find triangle sides law of sines automatically.
a, b, c = sides
A, B, C = angles in degrees
| a | b | A (°) | B (°) | C (°) | c |
|---|---|---|---|---|---|
| 8 | 6 | 45 | 60 | 75 | 7.047092 |
| 10 | 7 | 50 | 60 | 70 | 8.185353 |
| 5 | 5 | 60 | 50 | 70 | 4.698463 |
| 12 | 9 | 40 | 70 | 70 | 14.872297 |
| 7 | 5 | 30 | 45 | 105 | 5.773503 |
Use the law of sines formula manually:
1. c = (sin(C) * a) / sin(A)
2. C = 180° − A − B
This triangle law of sines calculator computes missing sides or angles with six-decimal precision automatically. Ideal for learning and engineering tasks.
• Works for any triangle, including oblique triangles.
• Complements the Law of Cosines.
• Useful in navigation, astronomy, and surveying.
• Essential in trigonometry courses.
• Helps in calculating unknown distances and angles.