Elements of Plane and Spherical Trigonometry: With the First Principles of Analytical Geometry

Εξώφυλλο
Simms and McIntyre, 1844 - 126 σελίδες
 

Άλλες εκδόσεις - Προβολή όλων

Συχνά εμφανιζόμενοι όροι και φράσεις

Δημοφιλή αποσπάσματα

Σελίδα 126 - SOLUTION, from solvo, to loosen ; in chymical language, any fluid which contains another substance dissolved in, and intimately mixed with it. SOLVENT ; any substance which will dissolve another. SPECIFIC, from species, a particular sort or kind ; that...
Σελίδα 9 - To express the sine and cosine of the sum of two angles in terms of the sines and cosines of the angles themselves.
Σελίδα 9 - In any triangle, the sides are proportional to the sines of the opposite angles. That is, sin A = sin B...
Σελίδα 61 - The area of a spherical triangle is proportional to the excess of the sum of its angles over two right angles (called the spherical excess).
Σελίδα 76 - ... and what is the highest latitude attained by a ship sailing from one to the other on the arc of a great circle? (Fig. 92.) Arts. Difference of distances, 737 "6 nautical miles; highest lat. 60° 54
Σελίδα 29 - That is. the sines of the sides of a spherical triangle are proportional to the sines of the opposite angles.
Σελίδα 19 - It depends on the principle, that the difference of the squares of two quantities is equal to the product of the sum and difference of the quantities.
Σελίδα 25 - A spherical triangle is a part of the surface of a sphere comprehended by three arcs of great circles. These arcs, which are called the sides of the triangle, are always supposed to be smaller each than a semicircumference. The angles which their planes make with each other are the angles of the triangle.
Σελίδα 92 - Given the altitude (a), the base (6), and (s) the sum of the sides of a plane triangle, to find the sides. Let ABC be a triangle whose base BC=6, and altitude a. Let DB = x, then AB= </a?+xi; also DC=*— z.-.AC=V^ Now AB+AC=s Square both sides, ... la2+(b—x)1\*=s—\d'-irxi\*. And =f— 2s. Or If— 24z=s2— 2...
Σελίδα 72 - We also know that the elevation of the pole above the horizon is equal to the latitude of the place.

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