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radian
(redirected from Radian measure)

   Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia 0.01 sec.
ra·di·an (rd-n)
n. Abbr. rad
A unit of angular measure equal to the angle subtended at the center of a circle by an arc equal in length to the radius of the circle.


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01 unit grid enables coordinates to be read off easily; * as a learning aid in the memorization of the coordinates of points representing multiples of 30 [degrees] and 45 [degrees] on the unit circle; * as a learning aid in the memorization of particular sine and cosine ratios; * to teach radian measure of angles.
95 Hardcover QA531 McKeague and Turner (both, Cuesta College) cover the usual introductory trigonometry topics: the six functions, right triangle trigonometry, radian measure, graphing and inverse functions, identities and formulas, equations, triangles, and complex numbers and polar coordinates.
I suggested that they consider the following: * Note that the circumference C of a circle of diameter D is an arc length, which means that the radian measure [pi] = C/D; since D = 2r (r = the radius of a circle), then [pi] = C/2r [?
 
 
 
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