In a triangle ABC, the Law of Sines states:

Question

Accepted Answer

A. $a/\sin A = b/\sin B = c/\sin C = 2R$

**Law of Sines:** a/sin A = b/sin B = c/sin C = 2R (R = circumradius).
The cosine formula is the Law of Cosines (B).
The other options are not standard.

Answer

$a^2 = b^2 + c^2 - 2bc \cos A$

Answer

$\sin A + \sin B + \sin C = 1$

Answer

$a + b + c = \sin A + \sin B + \sin C$

In a triangle ABC, the Law of Sines states:

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