A Treatise on Spherics: Comprising the Elements of Spherical Geometry, and of Plane and Spherical Trigonometry, Together with a Series of Trigonometrical TablesJ. Mawman, 1816 - 294 σελίδες |
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Σελίδα 171
... Sine of an arch is a perpendicular let fall , from either of its extremities , upon the diameter passing through the other extremity : and its versed sine , is the part of that diameter which is included between the sine and the ...
... Sine of an arch is a perpendicular let fall , from either of its extremities , upon the diameter passing through the other extremity : and its versed sine , is the part of that diameter which is included between the sine and the ...
Σελίδα 172
... sine of any arch is a third proportional ( E. 8. 6. ) to the diameter , and the chord of that arch , or ( Art . 7. ) to the diameter and the double of the sine of the half of that arch . ( 11. ) DEF . The Tangent of an arch is a ...
... sine of any arch is a third proportional ( E. 8. 6. ) to the diameter , and the chord of that arch , or ( Art . 7. ) to the diameter and the double of the sine of the half of that arch . ( 11. ) DEF . The Tangent of an arch is a ...
Σελίδα 173
... CBP . EM is the sine , and EN the cosine , of ABCE , and of CE . FA is the versed sine of AP . ( 14. ) COR . 1. The sine , cosine , tangent and secant of any arch , are respectively equal in magnitude , PLANE TRIGONOMETRY . 173.
... CBP . EM is the sine , and EN the cosine , of ABCE , and of CE . FA is the versed sine of AP . ( 14. ) COR . 1. The sine , cosine , tangent and secant of any arch , are respectively equal in magnitude , PLANE TRIGONOMETRY . 173.
Σελίδα 174
... sine , and the center of the circle is ( E. 34. 1. ) equal to the cosine of the arch , and may always be put for the ... sine of an arch of any number of degrees in the one , will be to the sine of an arch of the same number of degrees ...
... sine , and the center of the circle is ( E. 34. 1. ) equal to the cosine of the arch , and may always be put for the ... sine of an arch of any number of degrees in the one , will be to the sine of an arch of the same number of degrees ...
Σελίδα 175
... sine be given of an arch of a circle , of any given radius , the sine , cosine , tangent , co- tangent , secant and co - secant may be found , of an arch , of the same number of degrees , in a circle of any other given radius ( 15. 16 ...
... sine be given of an arch of a circle , of any given radius , the sine , cosine , tangent , co- tangent , secant and co - secant may be found , of an arch , of the same number of degrees , in a circle of any other given radius ( 15. 16 ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
angle opposite base bisect circle EFH circumference co-tangent common section cosine describe a circle describe Art diameter drawn equal and parallel equal arches equal circles equal spheres equal to FE equations Euclid's Elements Find Art fore four right angles given angle given arch given circle given great circle given point given sphere given triangle greater hypotenuse Introd join Art less measure meet oblique angles opposite angle parallel circles perpendicular plane triangle polar distance polar triangle pole Problem PROP proposition quadrantal triangle radius rical triangle right angles right-angled spherical triangle SCHOLIUM semi-circumference shewn side BC sin S sin sine sphe sphere's center sphere's surface spherical angle spherical distance Spherical Geometry spherical polygon spherical tri Spherical Trigonometry straight line tangent Theorem three angles three sides touch the circle triangle ABC trigonometrical functions wherefore
Δημοφιλή αποσπάσματα
Σελίδα 53 - If two triangles have two angles of the one equal to two angles of the other, each to each, and one side equal to one side, viz. either the sides adjacent to the equal...
Σελίδα 46 - BC shall be equal to the base EF ; and the triangle ABC to the triangle DEF ; and the other angles, to which the equal sides are opposite, shall be equal, each to each, viz.
Σελίδα iii - A circle is a plane figure contained by one line, which is called the circumference, and is such, that all straight lines drawn from a certain point within the figure to the circumference are equal to one another.
Σελίδα 43 - Theorem. If two spherical triangles on the same sphere, or on equal spheres, are equilateral with respect to each other, they are also equiangular with respect to each other.
Σελίδα 53 - If two triangles have one angle of the one equal to one angle of the other and the sides about these equal angles proportional, the triangles are similar.
Σελίδα 53 - BC common to the two triangles, which is adjacent to their equal angles ; therefore their other sides shall be equal, each to each, and the third angle of the one to the third angle of the other, (26.
Σελίδα iii - A diameter of a circle is a straight line drawn through the center and terminated both ways by the circumference, as AC in Fig.
Σελίδα 132 - If two triangles have two sides and the included angle in the one equal to two sides and the included angle in the other, each to each, the two triangles will be equal.
Σελίδα 38 - THEOREM. The sum of the sides of a spherical polygon is less than the circumference of a great circle.
Σελίδα 50 - If two angles of a triangle be equal to one another, the sides also which subtend the equal angles shall be equal to one another.