Elements of Trigonometry: Plane and SphericalSheldon & Company, 1877 - 201 pàgines |
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2sin a. c. log angle AOB angle less angle opposite angle or arc angled spherical triangle column comp complement Computing by logarithms corresponding cos x cos cosec cosine cotangent cotx diameter Diff divided equal Find the angles Find the area Find the logarithm Find the number formula Given two sides hence hypotenuse included angle less than 180 let fall log cot log sin LOGARITHMIC FUNCTIONS mantissa measuring arc multiple N.sine Napier's Analogies Napier's rules number whose logarithm observe Olney's passing primitive circle Prob project and solve project the triangle Prop.-The proposition quadrant radius right angled spherical right angled triangle secant secx side opposite sin a sin sin x cos sine sines and cosines solution solve the triangle species student subtract tang tangent trigonometrical functions values versed-sine whence x cos y
Passatges populars
Pàgina 64 - What was the perpendicular height of a balloon, when its angles of elevation were 35° and 64°, as taken by two observers on the same level, at the same time, both on the same side of it, and in the same vertical plane ; the distance between the two observers being 880 yards ? Ans., 935.757 yards.
Pàgina 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.