Peer reviewed
Direct linkERIC Number: EJ994529
Record Type: Journal
Publication Date: 2012
Pages: 8
Abstractor: As Provided
ISBN: N/A
ISSN: ISSN-0020-739X
EISSN: N/A
Available Date: N/A
An Elementary Proof of the Identity cot [theta] = [image omitted]
Ho, Weng Kin; Ho, Foo Him; Lee, Tuo Yeong
International Journal of Mathematical Education in Science and Technology, v43 n8 p1085-1092 2012
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].
Descriptors: Calculus, Mathematics Instruction, Mathematical Logic, Mathematical Concepts, Mathematical Formulas, Validity, Equations (Mathematics), Problem Solving, Mathematics, Higher Education, College Freshmen, College Mathematics
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Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A
Author Affiliations: N/A
