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A'BC abscissa acute angle adjacent side check formula circle circular measure colog cologarithms computed cos(S cosecant cosine cotangent cscº cubic equation decimal Denoting dist equal EXA M P L E expressed Find the angles Find the distance Find the logarithm Find the value Geometry given elements Given log Given two sides Hence hypotenuse included angle log cos log cot log csc log sin log tan log2 manner mantissa multiple of 360 negative angle nºr Note Number corresponding obtuse ordinate perpendicular to XX polar triangle positive angle quadrant Fig radius ratio right angle right spherical triangle right triangle right triangle ABC secant second quadrant SIIl sin B sin sin”a sine sing solution of oblique Solve the following Spherical Trigonometry subtract tana tanc terminal line trigonometric functions Whence by definition
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 those sides into the cosine of their included angle ; that is, (1) cos a = cos b...
Pàgina 42 - Hence, the characteristic of the logarithm of a number greater than 1 is 1 less than the number of places to the lefl of the decimal point.
Pàgina 62 - In every plane triangle, the sum of two sides is to their difference as the tangent of half the sum of the angles opposite those sides is to the tangent of half their difference.
Pàgina 44 - ... the logarithm of a fraction is equal to the logarithm of the numerator minus the logarithm of the denominator.
Pàgina 6 - ... in a direction contrary to the motion of the hands of a watch, with — and be this particularly noted — a constant tendency to turn inwards towards the centre of lowest barometer.
Pàgina 97 - A cos 6 = cos a cos c + sin a sin c cos B cos c = cos a cos 6 + sin a sin 6 cos C Law of Cosines for Angles cos A = — cos B...
Pàgina 43 - The logarithm of a product is equal to the sum of the logarithms of its factors.
Pàgina 81 - The sum of the angles of a spherical triangle is greater than two and less than six right angles ; that is, greater than 180° and less than 540°. (gr). If A'B'C' is the polar triangle of ABC...