- #1
ha9981
- 32
- 0
I do not understand when we are given a vector at point P(x,y,z) or in different forms cylindrical and spherical. What does it mean at point?? I mean aren't vectors supposed to start at origin, even if they don't how will that make a difference in their magnitude or angle between them.
For example we are given two vectors A(2,-2, 1) and B(1,2,-2). They are in different systems A is in spherical and B in in cylindrical and I don't have a problem handling that. Now what does it mean when it says: if they are perpendicular at spherical coordinate point P(2, theta, 60 deg) find theta. Now I know dot product is zero when they are perpendicular. I have no idea how how this has anything to do with theta as what does it mean when it says at point P?
For example we are given two vectors A(2,-2, 1) and B(1,2,-2). They are in different systems A is in spherical and B in in cylindrical and I don't have a problem handling that. Now what does it mean when it says: if they are perpendicular at spherical coordinate point P(2, theta, 60 deg) find theta. Now I know dot product is zero when they are perpendicular. I have no idea how how this has anything to do with theta as what does it mean when it says at point P?