Periodic Functions: Sine and cosine are periodic functions, which means that sine and cosine graphs repeat themselves in patterns. You can graph sine and cosine functions by understanding their period and amplitude.
VIDEO
What Are Periodic Trigonometric Functions?
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Citation styles
APA style
What Are Periodic Trigonometric Functions?. (2013, March 2). In ClassBrain Math Tutorials . Retrieved 07:11, May 23, 2013, from http://www.classbrainmath.com/2010/03/periodic-trigonometric-functions/
MLA style
Cynthia Kirkeby, “What Are Periodic Trigonometric Functions?.” ClassBrain Math Tutorials . 2 March 2013, 11:19 UTC. . 23 May 2013 <http://www.classbrainmath.com/2010/03/periodic-trigonometric-functions/ >.
MHRA style
Cynthia Kirkeby, 'What Are Periodic Trigonometric Functions?', ClassBrain Math Tutorials , 2 March 2013, 11:19 UTC, <http://www.classbrainmath.com/2010/03/periodic-trigonometric-functions/ > [accessed 23 May 2013]
The Chicago Manual of Style
Cynthia Kirkeby, “What Are Periodic Trigonometric Functions?.” ClassBrain Math Tutorials , http://www.classbrainmath.com/2010/03/periodic-trigonometric-functions/ [accessed May 23, 2013].
CBE/CSE style
Cynthia Kirkeby, What Are Periodic Trigonometric Functions? [Internet]. ClassBrain Math Tutorials; 2013 March 2, 11:19 UTC [cited 2013 May 23]. Available from: http://www.classbrainmath.com/2010/03/periodic-trigonometric-functions/ .
Bluebook style
What Are Periodic Trigonometric Functions?, http://www.classbrainmath.com/2010/03/periodic-trigonometric-functions/ (last visited May. 23, 2013).
AMA style
Cynthia Kirkeby, What Are Periodic Trigonometric Functions?. ClassBrain Math Tutorials. March 2, 2013, 11:19 UTC. Available at: http://www.classbrainmath.com/2010/03/periodic-trigonometric-functions/ . Accessed May 23, 2013.