Videos, solutions, activities and worksheets that are suitable for A Level Maths.

Determinants to Find the Area of a Triangle

Realize that the determinant of a 2x2 matrix is equal to the area of the parallelogram defined by the column vectors of the matrix

Rotate to landscape screen format on a mobile phone or small tablet to use the **Mathway** widget, a free math problem solver that **answers your questions with step-by-step explanations**.

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.