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Sine and cosine law calculator

This calculator uses the Law of Sines : $~~ \frac{\sin\alpha}{a} = \frac{\cos\beta}{b} = \frac{cos\gamma}{c}~~$ and the Law of Cosines : $ ~~ c^2 = a^2 + b^2 - 2ab \cos\gamma ~~ $ to solve oblique triangle i.e. to find missing angles and sides if you know any 3 of the sides or angles. Also, the calculator will show you a step by step explanation.

Sine and Cosine Law Calculator
0 1 2 3 4 5 6 7 8 9 / . del
Enter known values:
side a =
side b =
side c =
angle α =
angle β =
angle γ =

triangle
Select value to find:
side a
side b
side c
angle α
angle β
angle γ
area A
Show me an explanation
examples
example 1:
A triangle has sides equal to $ 3 m $, $5 m$ and $6 m$. Find angle $\alpha$.
example 2:
What is the length of side c?
Sine and cosine law problem
example 3:
Find angle $\beta$.
Sine and cosine law problem

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