# Mathematics: Compiled from the Best Authors and Intended to be the Text-book of the Course of Private Lectures on These Sciences in the University at Cambridge, Volume 2

Printed at the University Press, by WilliamHilliard, 1801 - Mathematics
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### Contents

 Problems 25 SURVEYING 207 NAVIGATION 271 Oblique Plane Sailing 286 Traverse Sailing 301 Parallel Sailing 307 CONIC SECTIONS 349
 DIALING 419 Definitions 487 SPHERICAL TRIGONOMETRY 501 Rectangular Spherical Trigonometry 512 Rectilateral Spherical Trigonometry 528 SPHERICAL ASTRONOMY 555

### Popular passages

Page 21 - As the base or sum of the segments Is to the sum of the other two sides, So is the difference of those sides To the difference of the segments of the base.
Page 17 - To find the other side: — as the sum of the two given sides is to their difference, so is the tangent of half the sum of their opposite angles to the tangent of half their difference...
Page 93 - A sphere is a solid bounded by a curved surface, every point of which is equally distant from a point within called the center.
Page 346 - The conjugate to any diameter is the line drawn through the centre, and parallel to the tangent of the curve at the vertex of the diameter. So...
Page 28 - But if the hypothenuse be made radius -, then each leg "will represent the sine of its opposite angle ; namely, the leg AB the sine of the arc AE or angle c, and the leg BC the sine of the arc CD or angle A.
Page 93 - The axis of a solid is a line drawn from the middle of one end to the middle of the opposite end ; as between the opposite ends of a prism.
Page 93 - The sphere may be conceived to be formed by the revolution of a semicircle about its diameter, which remains fixed.
Page 140 - Between these, in a right line, stands an ancient statue, the head whereof is 97 feet from the summit of the higher, and 86 feet from the top of the lower column, and the distance between the...
Page 225 - All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
Page 38 - Multiply the sum of the two parallel sides by the perpendicular distance between them, and half the product will be the area.