An Elementary Proof of the Identity cot [theta] = [image omitted]
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| Title: | An Elementary Proof of the Identity cot [theta] = [image omitted] |
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| Language: | English |
| Authors: | Ho, Weng Kin, Ho, Foo Him, Lee, Tuo Yeong |
| Source: | International Journal of Mathematical Education in Science and Technology. 2012 43(8):1085-1092. |
| Availability: | Taylor & Francis, Ltd. 325 Chestnut Street Suite 800, Philadelphia, PA 19106. Tel: 800-354-1420; Fax: 215-625-2940; Web site: http://www.tandf.co.uk/journals |
| Peer Reviewed: | Y |
| Physical Description: | |
| Page Count: | 8 |
| Publication Date: | 2012 |
| Document Type: | Journal Articles Reports - Descriptive |
| Education Level: | Higher Education |
| Descriptors: | Calculus, Mathematics Instruction, Mathematical Logic, Mathematical Concepts, Mathematical Formulas, Validity, Equations (Mathematics), Problem Solving, Mathematics, Higher Education, College Freshmen, College Mathematics |
| DOI: | 10.1080/0020739X.2011.644337 |
| ISSN: | 0020-739X |
| 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]. |
| Abstractor: | As Provided |
| Number of References: | 10 |
| Entry Date: | 2013 |
| Accession Number: | EJ994529 |
| Database: | ERIC |
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