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.

What Are Periodic Trigonometric Functions?


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APA style
What Are Periodic Trigonometric Functions?. (2013, March 2). In ClassBrain Math Tutorials. Retrieved 09:35, September 22, 2017, from http://www.classbrainmath.com/periodic-trigonometric-functions/
MLA style
Cynthia Kirkeby, “What Are Periodic Trigonometric Functions?.” ClassBrain Math Tutorials. 2 March 2013, 11:19 UTC. . 22 Sep 2017 <http://www.classbrainmath.com/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/periodic-trigonometric-functions/> [accessed 22 September 2017]
The Chicago Manual of Style
Cynthia Kirkeby, “What Are Periodic Trigonometric Functions?.” ClassBrain Math Tutorials, http://www.classbrainmath.com/periodic-trigonometric-functions/ [accessed September 22, 2017].
CBE/CSE style
Cynthia Kirkeby, What Are Periodic Trigonometric Functions? [Internet]. ClassBrain Math Tutorials; 2013 March 2, 11:19 UTC [cited 2017 Sep 22]. Available from: http://www.classbrainmath.com/periodic-trigonometric-functions/.
Bluebook style
What Are Periodic Trigonometric Functions?, http://www.classbrainmath.com/periodic-trigonometric-functions/ (last visited Sep. 22, 2017).
AMA style
Cynthia Kirkeby, What Are Periodic Trigonometric Functions?. ClassBrain Math Tutorials. March 2, 2013, 11:19 UTC. Available at: http://www.classbrainmath.com/periodic-trigonometric-functions/. Accessed September 22, 2017.