Elements of Plane and Spherical Trigonometry: With Practical ApplicationsR. S. Davis, 1862 - 490 páginas |
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Página 9
... formed by a straight line and a perpendicular to it ; as the angle CAB . 16. An ACUTE ANGLE is one which is less than a right angle ; as the angle DEF . C B A D E 22 F E An OBTUSE ANGLE is one which is greater than a right angle ; as ...
... formed by a straight line and a perpendicular to it ; as the angle CAB . 16. An ACUTE ANGLE is one which is less than a right angle ; as the angle DEF . C B A D E 22 F E An OBTUSE ANGLE is one which is greater than a right angle ; as ...
Página 15
... formed on the same side of a straight line , BF , are equal , when taken together , to two right angles ; for their sum is equal to that of the two adjacent angles , BAC , CAF . B PROPOSITION II . THEOREM . D E F Α 47. If one straight ...
... formed on the same side of a straight line , BF , are equal , when taken together , to two right angles ; for their sum is equal to that of the two adjacent angles , BAC , CAF . B PROPOSITION II . THEOREM . D E F Α 47. If one straight ...
Página 17
... formed by two straight lines intersecting each other , are together equal to four right angles . 51. Cor . 2. All the successive angles formed by 2 * BOOK I. 17.
... formed by two straight lines intersecting each other , are together equal to four right angles . 51. Cor . 2. All the successive angles formed by 2 * BOOK I. 17.
Página 18
... formed by any number of straight lines meeting at a common point , are together equal to four right angles . PROPOSITION V. - THEOREM . 52. If two triangles have two sides and the included angle in the one equal to two sides and the ...
... formed by any number of straight lines meeting at a common point , are together equal to four right angles . PROPOSITION V. - THEOREM . 52. If two triangles have two sides and the included angle in the one equal to two sides and the ...
Página 30
... HI . Then the opposite angles KOG , IOII , formed by the intersection of the two straight lines IK , GH , are equal ( Prop . IV . ) ; and the triangles KOG , IOH have the two sides KO , OG and the 30 ELEMENTS OF GEOMETRY .
... HI . Then the opposite angles KOG , IOII , formed by the intersection of the two straight lines IK , GH , are equal ( Prop . IV . ) ; and the triangles KOG , IOH have the two sides KO , OG and the 30 ELEMENTS OF GEOMETRY .
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Términos y frases comunes
A B C ABCD adjacent angles altitude angle ACB angle equal base bisect centre chord circle circumference circumscribed cone convex surface cosec Cosine Cotang cylinder diagonal diameter distance divided drawn equal Prop equilateral triangle equivalent exterior angle feet formed frustum gles greater half the sum hence homologous hypothenuse inches included angle inscribed interior angles isosceles less Let ABC line A B logarithmic sine measured by half multiplied number of sides parallel parallelogram parallelopipedon pendicular perimeter perpendicular polyedron prism PROBLEM PROPOSITION pyramid quadrantal radii radius ratio rectangle regular polygon Required the area right angles right-angled triangle rods Scholium secant segment side A B similar slant height solve the triangle sphere spherical polygon spherical triangle Tang tangent THEOREM triangle ABC triangle equal trigonometric functions vertex
Pasajes populares
Página 28 - If two triangles have the three sides of the one equal to the three sides of the other, each to each, the triangles are congruent.
Página 37 - 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.
Página 79 - Two rectangles having equal altitudes are to each other as their bases.
Página 251 - The convex surface of the cylinder is equal to the circumference of its base multiplied by its altitude (Prop.
Página 52 - If any number of quantities are proportional, any antecedent is to its consequent as the sum of all the antecedents is to the sum of all the consequents. Let a : b = c : d = e :f Now ab = ab (1) and by Theorem I.
Página 35 - If any side of a triangle be produced, the exterior angle is equal to the sum of the two interior and opposite angles.
Página 168 - If a straight line is perpendicular to each of two straight lines at their point of intersection, it is perpendicular to the plane of those lines.
Página 303 - Equal triangles upon the same base, and upon the same side of it, are between the same parallels.
Página 4 - The logarithm of any POWER of a number is equal to the product of the logarithm of the number by the exponent of the power. For let m be any number, and take the equation (Art. 9) M=a*, then, raising both sides to the wth power, we have Mm = (a")m = a"" . Therefore, log (M m) = xm = (log M) X »»12.
Página 102 - Two triangles, which have an angle of the one equal to an angle of the other, and the sides containing.