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Cosine Law Calculator and SolverOnline calculator, based on the cosine Law , to solve triangle problems. The first calculator solves triangle problems when 3 sides are given (SSS case) and the second calculator solves triangle problems when 2 sides and their included angle are given (SAS case).
The cosine laws are given by:
which gives 2) which gives 3) which gives
1  Use Cosine Law Calculator when 3 Sides are Given (SSS case)Enter the 3 sides a, b and c as positive real numbers and press "enter". The outputs are the 3 angles A (opposite side a), B (opposite side b) and C (opposite side c) in DEGREES.Note For a triangle to exist, the sum of any two sides must be greater than the third side.
1  Use Cosine Law Calculator when 2 Sides and the Included Angle are Given (SAS case)Enter the given angle in A (in DEGREES) and the two sides in b and c as positive real numbers and press "enter". The outputs are side a and 2 angles B (opposite side b) and C (opposite side c) in DEGREES.
More References and LinksOnline Geometry Calculators and Solvers .Sine Law Calculator and Solver . Cosine Law Problems . Sine Law Problems . Laws of Sines and Cosines Problems Calculator.
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