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Trigonometria (1658)

Newton, J. · leaf 93

An illustration from Trigonometria, 1658, leaf 93
ngles and a fide oppofite to one of them being given, to find the fide comprehended by thofe angles.Ifit be known t whether the fide fought, or the fide oppofite to the othtr given angle-, be more or lejfe then a Quadrant. In the Obliquangular triangle ADC, the fide A D is inquired, 1 Super… … ^r As the Raditts, § J TV the tangent of\ g S So the cofine of t, %\To the tangent of the fegment of thebafe. ►§ jTo the tangent of the Uypotenufag 1 So the cofine of the angle given, T A jT3 2 For the other fegment of the bafe, by the 6 Confett.The terms of proportion. As the tang, of the angle…

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