How To Find The Area of a Triangle Using Matrices and Determinants

This precalculus video tutorial explains how to calculate the area of a triangle by finding the determinant of a 3x3 matrix.

Algebra and Precalculus Video Playlist:

Area of a Triangle - Heron's Formula:

Area of an Equilateral Triangle:

Intro to Matrices:

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Question: What happens in the 3D case?

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