INTERACTIVE TRIGONOMETRY
Sine Rule & Cosine Rule
Reshape a triangle. Discover how its sides and angles are connected.
Opposite pairs: a ↔ A, b ↔ B, c ↔ C
Drag B to change c. Drag C to change b and angle A.
Sine Rule & Cosine Rule
Investigate
Use degree mode. Lengths and practice answers use 2 decimal places; known angle B is displayed to 1 decimal place. Practice calculations use the displayed givens.