Originally Posted by

**view360** So for intersection of a plane. I'm gonna make up a problem and show how far I can get into it.

Intersection between 2x + 3y - 4z = 12 and 5x + 2y + 3z = 7.

So you take the cross product of [2, 3, 4] and [5, 2, 3], right? How do you find this cross product? is it [10, 6, 12] or something else?

Then after you find that...say it is [1,2,3] even though it isn't.

So set x to 0 for the two planes. Then solve for y and z. Say it turns out to be [0, 6, 7].

then it is [0 6, 7] + t(1,2,3). is that right?

Okay urgent how do you find a cross product?? I have no idea how.