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A'BC abscissa acute angle adjacent side Algebra angle corresponding check formula circular measure colog cologarithms cosecant cosine cosº cosz cotangent cscº cubic equation dist equal equation EXA M P L E expressed find log Find the angle find the logarithmic Find the value Geometry Hence hypotenuse Io'ſ log cos log cot log csc log sec log sin log tan log2 logarithmic sine LOGARITHMS OF NUMBERS mantissa multiplying Napier's Note number corresponding º º opposite ºš Plane positive angle prove radius result right angle right spherical triangle right triangle secant sin B sin sinº solution of oblique Solve the following Spherical Trigonometry subtract table of logarithmic tangent terminal line trigonometric functions Whence by definition
Pàgina 96 - 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 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 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 44 - ... the logarithm of a fraction is equal to the logarithm of the numerator minus the logarithm of the denominator.
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...
Pàgina 87 - I. The sine of the middle part is equal to the product of the tangents of the adjacent parts.