If I define vectors and is the following true?
thanks for the help!
Suppose that is the diameter of a circle with center , and that is a point on one of the two arcs joining and . Show that and are orthogonal. is from to . is from to . is from to .
I know if their dot product is zero, they are orthogonal. If the dot product is it would have to be zero because their magnitudes are the same.
Is this enough proof? I think it is.