00:01
In this question, we're going to explore if this statement is true.
00:03
Now, given a vector v, which is a1, b1, c1 in its vector component, and is on the plane, so this is the equation of plane, then the statement says that a1 times a2 plus b1 times b2 plus c1 times c2 is equal to 0.
00:21
So we're going to check if this is correct.
00:24
Before that, if we have a plane in general with a normal vector of abc, then the plane equation is a x plus b y plus c z plus d equals to zero.
00:37
Now, if i have a vector v that is on the plane, you can see that it will definitely be right angle to the normal vector of plane.
00:47
So that means v is perpendicular to n, and that will mean v .n is going to be zero.
00:55
So let's see here the normal vector of this plane is a2, b2, c2.
01:08
So i'm going to replace the normal here with a2, b2, c2...