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99.38 Proof without words: Cotangent expressed as a series of cosecants of multiple angles in powers of two

Published online by Cambridge University Press:  02 November 2015

K. B. Subramaniam
K. B. Subramaniam*
Affiliation:
Regional Institute of Education (NCERT), Shyamla Hills, Bhopal, Madhya Pradesh 462013, India, e-mail: shunya_1950@yahoo.co.in
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Information
The Mathematical Gazette , Volume 99 , Issue 546 , November 2015 , pp. 538
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Copyright © Mathematical Association 2015