KnowraLaw of sinesLinked fromLinked fromThe 13 pages that link to Law of sines, each with the reason it gives.All 13Related 9Compared with 4Pythagorean theoremCompared with: It handles arbitrary triangles through angle-side ratios rather than the theorem’s right-angle square relation.Law of cosinesCompared with: It is often more direct when an opposite side-angle pair is known.Ptolemy's theoremCompared with: It relates sides and angles within a triangle rather than opposite sides and diagonals of a cyclic quadrilateral.Law of cotangentsCompared with: It relates sides to angles, whereas the cotangent law uses only the three angles.