Area of a triangle

Calculates the area of a triangle given two sides and an angle

Calculate the area of a triangle


This function calculates the area of a triangle. For calculation, enter the length of two sides and their angles in degrees or radian. Then click the Calculate button.


Area of a triangle calculator

 Select the angle measure
 
 Input
Side a
Side b
Angle γ
Decimal places
 Results
Area

Enter the sides a and b and the angle γ

alternatively you can enter:
the sides b and c and the angle α, or
the sides a and c and the angle β .


Formulas for calculating the area of a triangle

Calculation with given two sides and their angles

To calculate the area, the length of two sides and the angle can also be multiplied and divided by 2.

\(\displaystyle A = \frac{ a · b · sin(γ)}{2} \)
\(\displaystyle A = \frac{ a · c · sin(β)}{2} \)
\(\displaystyle A = \frac{ b · c · sin(α)}{2} \)
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