## Elements of Trigonometry: Plane and Spherical |

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2sin a. c. log adjacent angle opposite angle or arc angled spherical triangle base column comp complement cosec cosine cosx cosy cotangent cotx decimal diameter Diff Divide equal example figures Find the angles find the area Find the logarithm Find the number formula Given two sides hence hypotenuse included angle latitude less than 180 log cot log sin log tan Logarithmic Functions mantissa measuring arc Multiply N.sine Napier's Analogies number whose logarithm observe passing primitive circle Prob project and solve project the triangle proposition quadrant right angled spherical right angled triangle secant side opposite similar triangles sin x sine sines and cosines solution solve the triangle species spherical excess Spherical Trigonometry student subtract sun's declination TABLE OF LOGARITHMS tana tang tangent trigonometrical functions values versed-sine versin whence

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Side 96 - In a spherical triangle the cosine of any side is equal to the product of the cosines of the other two sides plus the product of the sines of these two sides and the cosine of their included angle.

Side 55 - ... is The facility with which the books can be used for classes of all grades, and in schools of the widest diversity of purpose, Each volume in the series is so constructed that it may be used with equal ease by the youngest and least disciplined...