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Published online by Cambridge University Press: 15 September 2014
The assumption that there is a limit in Professor Tait's problem regarding the interpretation of Limn=∞(cosnx) means that if we start with an angle x, and find the number which is its cosine, then the number which is the cosine of this number, and so on, we shall at last come to a limiting result ω, such that cos ω = ω.