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F'or the coinvenience of the reader, there is inicluded in Table 3 a compilation of 25D values of the tangent and cotangent for arguiieiits 1?(1?)89?. These data, which are required in computing the values of c, are here tabulated with the samne range and precision as for the values of siine and cosine given by G. W. and R. M. Spenceley [4]. The only comparable table of decimal approximations to the tangent appears to be the relatively inaccessible 30D table of Herrin-anti [5].

The asymptotic expansion of the integrals psi and chi in terms of Tchebycheff polynomials