the radius vector; and the vectorial angle the radius vector; and the vectorial angle
Angle of emergence is the angle which the normal makes with the emergent ray.
180 degrees -- a straight angle
Ray
angle the central axis makes with the 50% isodose line
its the tangent of the angle the slope makes with the x-axis
Yes,angle of dip,or angle of inclination is the angle that a compass arrow direction or an axis of magnetic needle makes with plane of the horizon. Strike and dip are the terms of Geophysics and Geology applied them to determine the coordinates of the location of any geological object.
Some of the factors that determine the movements of a projectile include: air resistance, force of gravity, initial launch velocity, the angle a projectile was launched at, and the objects initial elevation.
Assuming your question is what makes a right-angle, it is an angle of 90o .
Angle of emergence is the angle which the normal makes with the emergent ray.
Refraction
accounting is general mathematics which improve your calculations and makes you a expert in mathematicx. So to be perfect in mathematics you have to make your account best than your mathematics.
The angle of incidence
It is a straight angle.
In Physics, the angle of incidence is the angle a ray or beam of light makes meeting a surface. To visualize it, think of it as the angle a cricket ball, football, or basketball makes on hitting the ground. Also the angle of incidence is equal to the angle of reflection.
The angle that the incoming light ray makes with the normal is called the angle of incidence.
180 degrees -- a straight angle
Ray