An Elementary Proof of the Identity cot [theta] = [image omitted]

Autor/inn/en	Ho, Weng Kin; Ho, Foo Him; Lee, Tuo Yeong
Titel	An Elementary Proof of the Identity cot [theta] = [image omitted]
Quelle	In: International Journal of Mathematical Education in Science and Technology, 43 (2012) 8, S.1085-1092 (8 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0020-739X
DOI	10.1080/0020739X.2011.644337
Schlagwörter	Calculus; Mathematics Instruction; Mathematical Logic; Mathematical Concepts; Mathematical Formulas; Validity; Equations (Mathematics); Problem Solving; Higher Education; College Freshmen; College Mathematics + Suchen Sie Ihr Suchwort? Analysis; Differenzialrechnung; Infinitesimalrechnung; Integralrechnung; Mathematics lessons; Mathematikunterricht; Mathematical logics; Mathematische Logik; Mathematische Formel; Gültigkeit; Equations; Mathematics; Gleichungslehre; Problemlösen; Hochschulbildung; Hochschulsystem; Hochschulwesen; Studienanfänger
Abstract	This article gives an elementary proof of the famous identity [image omitted]. Using nothing more than freshman calculus, the present proof is far simpler than many existing ones. This result also leads directly to Euler's and Neville's identities, as well as the identity [image omitted]. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10