- #1

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## Homework Statement

Three vectors

**A, B, C**point from the origin O to the three corners of a triangle. Show that the area of the triangle is given by

area = [itex]\frac{1}{2}[/itex]|(

**B**[itex]\times[/itex]

**C**) + (

**C**[itex]\times[/itex]

**A**) + (

**A**[itex]\times[/itex]

**C**)|

## Homework Equations

area of triangle with sides a, b, c = [itex]\frac{1}{2}|[/itex]a[itex]\times[/itex]c|

## The Attempt at a Solution

I can't figure out how to go about it. I know I need to find the lengths between the vertices and use that equation, but I don't know how to make it look like the expected result. I'm totally lost.