IN MATH: 1. adj. in trigonometry, an acute angle which may be used as a reference or to compute the trigonometric functions of non-acute angles. EX. An angle of may be used as a reference angle for angles of .

See: Fractions, Radians, Angles - an graphics that might clarify radian measure TAN GENTS AND OTHER THINGS OF INTEREST - trig resources Rectangular & Polar Graph Paper

IN ENGLISH: 1. as defined above.

APPLICATION: See list 330.

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