## A treatise of plane and spherical trigonometry, in theory and practice: adapted to the use of students |

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A Treatise of Plane and Spherical Trigonometry, in Theory and Practice ... Francis Nichols No preview available - 2015 |

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90 degrees adjacent angle AHDL analogy angle ABC angle ACB angle opposite Answer arc AC arc or angle base centre chord circle comp complement cosecant cosine cotangent equation find the angles find the rest fourth quadrant Given the side greater than 90 half the sum half their difference height Hence hypothenuse AC included angle less than 90 logarithmic sines measured negative opposite angle perp perpendicular plane triangle PROP proportion quadrant AH quantity right-angled spherical triangle right-angled triangle Scholium secant segments side AC sides and angles sine a sine sine and cosine sine2 sines and tangents small arc solution spherical angle spherical triangle ABC spherical trigonometry supplement tables tangent of half theodolite theorems third side three angles three sides triangle are given versed sine Xcos yards