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 16:18, September 23, 2018, 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. . 23 Sep 2018 <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 23 September 2018]
The Chicago Manual of Style
Cynthia Kirkeby, “What Are Periodic Trigonometric Functions?.” ClassBrain Math Tutorials, http://www.classbrainmath.com/periodic-trigonometric-functions/ [accessed September 23, 2018].
CBE/CSE style
Cynthia Kirkeby, What Are Periodic Trigonometric Functions? [Internet]. ClassBrain Math Tutorials; 2013 March 2, 11:19 UTC [cited 2018 Sep 23]. 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. 23, 2018).
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 23, 2018.