True or false. Find cos q , where q is the angle between u and v. The angle between v and w . Also find a vector parallel to their line of intersection. Give a reason for your answer.
All bold symbols represent vectors.
Remember to express the result as a function of t alone. Let T , N , and B be the unit tangent, normal, and binormal respectively. A particle moves in the xy-plane in such a manner that the derivative of the position vector is always perpendicular to the position vector. Show that the particle moves on a circle with center at the origin. All bold symbols represent vectors.