A Collection of Problems and Examples Adapted to the "Elementary Course of Mathematics.": With an Appendix Containing the Questions Proposed During the First Three Days of the Senate-House Examinations in the Years 1848, 1849, 1850, and 1851J. Deighton, 1851 - 173 σελίδες |
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Αποτελέσματα 1 - 5 από τα 45.
Σελίδα 53
... = cot · 2 2 2 2 2 sin ( 4 a + b - B ) : sin C :: a2 - b2 : c2 , C sin2 = cos A + cos B , C 2 1 . ( a + b ) cos C + ( a + c ) cos B + ( b + c ) cos A = a + b + c . 2. If R be the radius of the circle circumscribed TRIGONOMETRY . 53.
... = cot · 2 2 2 2 2 sin ( 4 a + b - B ) : sin C :: a2 - b2 : c2 , C sin2 = cos A + cos B , C 2 1 . ( a + b ) cos C + ( a + c ) cos B + ( b + c ) cos A = a + b + c . 2. If R be the radius of the circle circumscribed TRIGONOMETRY . 53.
Σελίδα 54
... circle , then A B C 2 2 r = 4R sin — sin sin 2 3. In a plane triangle ABC , given the sum of the sides AC , BC ; the ... circle inscribed in a triangle , and r 、 r ̧ r 、 the radii of three other circles which touch the sides produced ...
... circle , then A B C 2 2 r = 4R sin — sin sin 2 3. In a plane triangle ABC , given the sum of the sides AC , BC ; the ... circle inscribed in a triangle , and r 、 r ̧ r 、 the radii of three other circles which touch the sides produced ...
Σελίδα 55
... circles is a mean proportional between the greatest and the least ; shew that the sides are in the proportion of √5-1 ... circle , determine the sides . 16. The triangle ABC has its angles A , B , C in the proportion of 2 : 3 : 4. Prove ...
... circles is a mean proportional between the greatest and the least ; shew that the sides are in the proportion of √5-1 ... circle , determine the sides . 16. The triangle ABC has its angles A , B , C in the proportion of 2 : 3 : 4. Prove ...
Σελίδα 56
... circle . 22. The hypothenuse of a right - angled triangle is less than the sum of the two sides by the diameter of the in- scribed circle . 23 . If two triangles have an angle of the one equal to one angle of the other , and also ...
... circle . 22. The hypothenuse of a right - angled triangle is less than the sum of the two sides by the diameter of the in- scribed circle . 23 . If two triangles have an angle of the one equal to one angle of the other , and also ...
Σελίδα 60
... circle in terms of the sides . . 3. The excess of the sine above the versed sine , in angles less than 90 ° , is greatest when the angle = 45 ° . Prove this and find the value of the maximum excess . 4. In any quadrilateral figure , the ...
... circle in terms of the sides . . 3. The excess of the sine above the versed sine , in angles less than 90 ° , is greatest when the angle = 45 ° . Prove this and find the value of the maximum excess . 4. In any quadrilateral figure , the ...
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angular points arithmetical arithmetical mean arithmetical series axis base bisects centre of gravity chord circle concave convex lens cos² cosec curve cylinder Describe determine diameter direction distance Divide drawn elastic balls ellipse equal equation equilibrium feet find the height Find the number find the position Find the velocity fluid focal length force geometrical focus geometrical progression geometrical series given point given velocity given weight horizontal plane hyperbola immersed inches incident inclined plane inscribed latus rectum luminous point mirror motion moving Multiply observed parabola parallel parallelogram pencil of rays perpendicular placed pressure proportional prove pullies quantities radii radius ratio reflexion refracted respectively right angle shew sides sin² specific gravity sphere spherical square St John's College straight line string passing Subtract surface tangent tower triangle vertex
Δημοφιλή αποσπάσματα
Σελίδα 111 - If two triangles have two sides of the one equal to two sides of the...
Σελίδα 128 - To divide a given straight line into two parts, so that the rectangle contained by the whole and one of the parts, shall be equal to the square of the other part.
Σελίδα 111 - If a straight line be divided into two equal parts, and also into two unequal parts, the rectangle contained by the unequal parts, together with the square on the line between the points of section, is equal to the square on half the line.
Σελίδα 112 - EQUAL straight lines in a circle are equally distant from the centre ; and those which are equally distant from the centre, are equal to one another.
Σελίδα 144 - ... a circle. The angle in a semicircle is a right angle: the angle in a segment greater than a semicircle is less than a right angle ; and the angle in a segment less than a semicircle is greater than a right angle.
Σελίδα 160 - Triangles upon equal bases, and between the same parallels, are equal to one another.
Σελίδα 112 - 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 160 - In any right-angled triangle, the square which is described upon the side subtending the right angle, is equal to the squares described upon the sides which contain the right angle.