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Unformatted text preview: a r = = a r r r Chapter 6 Review 6.1 Radian Measure Radian: Alternative to represent the size of an angle. Arc Length ( a ): Proportional to the radius and the central angle, . *One radian is about 57.3 radians = 180 To convert from degree measure to radians, multiply by 180 To convert from radians to degrees, multiply by 180 6.2 Radian Measure and Angles on the Cartesian Plane The trigonometric ratios for any principal angle, , in standard position can be determined by finding the related acute angle, , using coordinates of any point that lies on the terminal arm of the angle. sin = y cos = x tan = y r r x csc = r sec = r cot = x y x y = = 1 The CAST rule Quad 2 S Quad 1 A Quad 1: All ( A ) ratios are positive Quad 2: Sine ( S ) is positive Quad 3: Tan ( T ) is positive Quad 4: Cod ( C ) is positive Quad 3 T Quad 4 C 6.3 Exploring Graphs of the Primary Trigonometric Functions Summary of the Graphs of Primary Trig Functions...
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This note was uploaded on 01/14/2012 for the course MAT 107 taught by Professor Sda during the Spring '11 term at Beacon FL.
- Spring '11
- Arc Length