Can moral principles really govern? Is a code of ethics truly enforceable by a state agency? Kentucky General Assembly mandates that the Kentucky Board of Physical Therapy promulgate,
The angle made by the ray of light in the air to that of the reference light (the normal), is the angle of incidence, and the angle made by the ray of light in the glass to the same normal, is the angle of refraction. It is the ratio of the sines of both these angles that is the refractive index of the block of glass.
A right angle is an angle with measure equal to 90 degrees. An acute angle is an angle with a measure between 0 and 90 degrees. An obtuse angle is an angle with a measure between 90 and 180 degrees. Two angles are complementary if the sum of their measures is equal to 90 degrees.