Trigonometry Triangle Solver

A triangle has six parts, three sides and three angles, and this returns the missing three once you supply any three that pin it down. The cosine rule covers three sides or two sides with the angle between them, the sine rule covers the two cases that start from a pair of angles, and every answer comes with area, perimeter, circumradius and inradius. The ambiguous case, two sides and an angle that is not between them, is reported as it really is: no triangle, one triangle, or two. It does not plot graphs or evaluate a bare sine or cosine, and a triangle with a right angle in it is quicker in the right triangle calculator.

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Fill in one box or the other. A multiple of pi is exact where a decimal in radians is not.
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