Edition of Vector's, let's say a Victor Ebe.
Simply means the displacement from a point A to point B..
Now consider the situation that a girl moves from A to B and then from B to C, net displacement made
by the girl from point A to point C is given, by the way, to a C, and it's expressed as a C is equal
to a B plus B.C. This is known as the triangle law of vector addition.
Now, let's check out the multiplication of a vector bio scalar you see in green.
There is a vector here if you draw the same vector, but in opposite direction, it's minus.
I reduce the length of it.
I can multiply it by half.
And the length is reduced by half.
If I want to lengthen it or make it double, I just multiplied by a killer to inverse the direction
minus two.
Simple.
Product of two vectors can be done in two is.
DOT product whose result is a scalar.
And Victor product, whose result is the victor.
That product is even called a killer product, so a product of two non-zero vectors, A and B is denoted
by vector A, dot, vector B, C, it's defined as aid or B is equal to A, B, cos T the.
The application of a DOT product is a little piece of weed is lying on the floor and I want to displace
that paper, I apply a force at an angle theta and the displacement I can get it, or basically how
much distance that weight has moved the distance.
Basically, I can measure it by giving aid or B or AB costs theta, if that is equal to zero displacement
would be more if to exact 90 degree.
Just imagine type nine B, that means cause 90 is equal to zero eight or B is equal to zero.
So the magnitude eventually is zero.
Yeah, so once again, I'll repeat, the output of a product is always a real quantity.
It's a real.
Another type of product, this gross product, we can even call it as a vector product.
So, Victor, A Cross B is equal to Ebbie sine Teda, multiplied by a unit vector.
Output of a product, I repeat, output of across product is always a vector.
Just check out an application, let's say I'm done with the diaper changer, the diaper Joe is already
done and I'm trying to set up the screws with the jack.
So to tighten the screws.
Yeah, with the jack, the length of the jack in the direction is are.
The force applied is in this direction to tighten the screws, so the total dark generated is r f sign
data.
Output of a gross product is always a vector, output of a dot product is a real quantity.
I hope the difference is clear between our product and cross-bred just.