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On the Fractional Infinite Series for cosecx, secx, cotx, and tanx

Published online by Cambridge University Press:  20 January 2009

D. K. Picken
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The infinite products for sinx and cosx are most conveniently obtained in a rigorous way from the well-known factorial expressions for sinnθ and cosnθ which, when n is an even integer, take the forms

θ being put equal to and n made infinitely great.

Type
Research Article
Information
Proceedings of the Edinburgh Mathematical Society , Volume 22 , February 1903 , pp. 14 - 20
Copyright
Copyright © Edinburgh Mathematical Society 1903

References

* Cf. Hobson's Trigonometry, Chap. XVII.