MediumVectors & geometry

Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §11.3 Cross Products and Determinants, #40 · Multivariable Calculus · Vectors & geometry

Problems 41–44 compute the areas of triangles.

Show that $(A \times B) + (B \times C) + (C \times A)$ is perpendicular to $B - A$ and $C - B$ and $A - C$ .

Problems 41–44 compute the areas of triangles.

This exercise builds on another exercise in its source book, which isn't shown here.

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §11.3 Cross Products and Determinants, #40

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**Problems 41–44 compute the areas of triangles.**

Problems 41–44 compute the areas of triangles.