railway RRB JE (CBT I + CBT II) Mock Test 2024 Electromagnetic Theory Vector Calculus Curvilinear Coordinates
In a cylindrical coordinate system, a half plane is perpendicular to xy-plane and at angle with respect to xz-plane. This angle is known as ________.
1
co-directional angle
2
azimuthal angle
3
plane angle
4
direct angle