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Yes, you can use the Law of Cosines for SSA (Side-Side-Angle), though it is generally faster and more standard to use the Law of Sines. [1] When using the Law of Cosines for SSA, you will set up your formula to find the missing side, which will leave you with a quadratic equation. Solving that quadratic can reveal \(0\), \(1\), or \(2\) positive solutions, which helps you identify the exact number of possible triangles (the “ambiguous case”)
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