This calculator applies the Law of Sines $~~ \dfrac{\sin\alpha}{a} = \dfrac{\cos\beta}{b} = \dfrac{cos\gamma}{c}~~$
and the Law of Cosines $ ~~ c^2 = a^2 + b^2 - 2ab \cos\gamma ~~ $ to solve oblique triangles, i.e., to find missing angles and sides if you know any three of them.
The calculator shows all the steps and gives a detailed explanation for each step.
Statistics and probability
Oblique triangle formulas
EXAMPLES
A triangle has sides equal to $ 3 m $, $5 m$ and $6 m$. Find angle $\alpha$ using cosine theorem.
Using the sine theorem, find the length of side c.
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