IN MATH: 1. n, an angle measure (symbol rad may be used, though no symbol is needed).
EX. A right angle (90°) measures radians, 1.57079632679489... radians.
EX. Simplify .
IN MATH: 2. n. 1 radian is a constant, like pi, and e, and the square root of 2. It is about 57.3, but is irrational like the other constants listed here. It divides the circle into nice, simple, pieces. Angle measures need not be written in degrees, but may be written as numbers.
IN ENGLISH: 1. as defined above.
APPLICATION: See list 330.
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