00:01
Now i want to find x where these two vectors are orthogonal, which means they are at right angles to each other, perpendicular.
00:08
And for that, i use scalar product.
00:11
U.
00:12
Dot v is length of u, length of v, cosine, theta.
00:20
That you'll find on all formula sheets, scalar product or dot product.
00:25
So here then i want to have u .v is equal to.
00:35
So u .v then will be length of u length of v, cosine 90 degrees if they are at bright angles, orthogonal.
00:47
And cosine 90 is zero.
00:49
So u .dv then will be zero if they're orthogonal...