- #1
majinsock
- 11
- 0
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.