Indian Science and Technology in the Eighteenth Century: Some Contemporary European Accounts c9.197
Indian Science and Technology in the Eighteenth Century: Some Contemporary European Accounts c9.197
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c9.197
⁶⁸ To judge of the accuracy of this approximation, suppose O to be the obliquity of the ecliptic, and x the excess of the semidiurnal arch, on the longest day, above an arch of 90°, then