Triangle Area Calculator
Calculate triangle area using two sides and included angle
About this calculator
The Triangle Area Calculator computes the area of any triangle when you know two sides and the angle between them. This method uses the formula: Area = (1/2) × a × b × sin(C), where 'a' and 'b' are the two known sides and 'C' is the included angle. This calculator is particularly useful for students, engineers, and professionals working with triangular measurements in construction, design, or mathematical problem-solving where direct height measurement isn't possible.
How to use
Enter the length of the first side in the appropriate unit, then input the length of the second side. Next, enter the included angle between these two sides in degrees. Click the calculate button to instantly get the triangle's area displayed in square units corresponding to your input measurements.
Frequently asked questions
What is an included angle in a triangle?
An included angle is the angle formed between two known sides of a triangle, located at the vertex where these sides meet.
Can I use this calculator with any triangle type?
Yes, this calculator works for all triangle types: acute, obtuse, right, scalene, isosceles, and equilateral triangles.
What units should I use for the measurements?
You can use any units for the sides (inches, feet, meters, etc.) as long as both sides use the same unit.