Can i just find the triple scalar product a.(b x c)

And if it = 0 then it lies in the plane?

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- Jul 22nd 2010, 05:48 AMadam_leedsThree vectors lie in a plane
Can i just find the triple scalar product a.(b x c)

And if it = 0 then it lies in the plane? - Jul 22nd 2010, 06:41 AMPlato
- Jul 22nd 2010, 07:04 AMadam_leeds
- Jul 22nd 2010, 07:29 AMPlato
I don't understand what you are doing.

- Jul 22nd 2010, 07:45 AMadam_leeds
Yeah i did something wrong, i used this to help me YouTube - The Cross Product :) thanks

- Jul 23rd 2010, 02:49 AMHallsofIvy
A short cut for the triple product is this:

If , , and [tex]v_3= <x_3, y_3, z_3> then the cross product is the determinant: