## Elements of Plane and Spherical Trigonometry: With Logarithmic and Other Mathematical Tables and Examples of Their Use and Hints on the Art of Computation |

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9 Prop algebraic sign angle AOB angle corresponding angle XOM applied arithmetical complement circle circumference co-ordinates coefficients column computation cos2 cos3 cosec cosine cotangent Cotg differences distance divided Entering the table equal equations error example Exerclses expression find log find the values formula fourth quadrant geometry gives greater Hence imaginary unit interpolation intersect latitude length line OX log cot loga mantissa measure metres minutes negative nth roots opposite angles perpendicular places of decimals polar triangle polygon positive direction preceding problem projection quantities radius revolving right angle right triangle roots of unity secant sexagesimal sin2 sine N sines and cosines spherical triangle spherical trigonometry square student substituting subtract supplementary angles suppose Tang theorem third quadrant tions trigono trigonometric functions trihedral angle unit write zero