← Mathematics A (4MA1)
Q1 / 5
Sine and cosine rules
Higher
2 marks
When should you use the cosine rule rather than the sine rule?
A
Cosine rule: when you know SSS or SAS; Sine rule: when you know AAS or SSA
B
Always use the cosine rule — it works for all triangles
C
Cosine rule: only for right-angled triangles
D
They are interchangeable — use whichever you prefer
Need a hint?