Elements of Geometry: Containing the First Six Books of Euclid, with a Supplement on the Quadrture of the Circle and the Geometry of Solids; to which are Added, Elements of Plane and Spherical TrigonometryBell & Bradfute, 1836 - 471 σελίδες |
Αναζήτηση στο βιβλίο
Αποτελέσματα 1 - 5 από τα 12.
Σελίδα 313
... hypotenuse . From the centre C , with any ra- dius CD , describe the arck DE ; draw DF at right angles to CE , and from E draw EG touching the circle in E , and meeting CB in G ; DF is the sine , and EG the tangent of the arch DE , or ...
... hypotenuse . From the centre C , with any ra- dius CD , describe the arck DE ; draw DF at right angles to CE , and from E draw EG touching the circle in E , and meeting CB in G ; DF is the sine , and EG the tangent of the arch DE , or ...
Σελίδα 314
... hypotenuse . For CG is the secant of the angle C ( def . 7. ) , and the tri- angles CGE , CBA being equiangular , CA : CB :: CE : CG , that is , CA : CB :: R : sec . C. Cor . 2. If the analogies in this proposition , and in the above ...
... hypotenuse . For CG is the secant of the angle C ( def . 7. ) , and the tri- angles CGE , CBA being equiangular , CA : CB :: CE : CG , that is , CA : CB :: R : sec . C. Cor . 2. If the analogies in this proposition , and in the above ...
Σελίδα 315
... hypotenuse be made the radius , the sides be- come the sines of the opposite angles ; and if one of the sides be made the radius , the other side becomes the tan- gent of the opposite angle , and the hypotenuse the secant of it . adt ...
... hypotenuse be made the radius , the sides be- come the sines of the opposite angles ; and if one of the sides be made the radius , the other side becomes the tan- gent of the opposite angle , and the hypotenuse the secant of it . adt ...
Σελίδα 327
... hypotenuse and an AB . R : cos B :: CB : AB . 2 angle . AC and C , a BC . Cos C : R :: AC : BC . 3 side , and one of AB . R : tan C :: AC : ΑΒ . 4 the acute angles . CB and BA , the C. CB : BA :: R : sin C. 5 hypotenuse and a side ...
... hypotenuse and an AB . R : cos B :: CB : AB . 2 angle . AC and C , a BC . Cos C : R :: AC : BC . 3 side , and one of AB . R : tan C :: AC : ΑΒ . 4 the acute angles . CB and BA , the C. CB : BA :: R : sin C. 5 hypotenuse and a side ...
Σελίδα 328
... hypotenuse BC , a solution may also be obtained by help of the secant , for CA : CB :: R : sec . C ; if , there- fore , this proportion be made , R : sec . C :: AC : : CB , CB will be found , In the third case , when the hypotenuse ...
... hypotenuse BC , a solution may also be obtained by help of the secant , for CA : CB :: R : sec . C ; if , there- fore , this proportion be made , R : sec . C :: AC : : CB , CB will be found , In the third case , when the hypotenuse ...
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
ABC is equal ABCD altitude angle ABC angle ACB angle BAC angle EDF arch AC base BC bisected centre circle ABC circumference cosine cylinder definition demonstrated described diameter draw drawn equal angles equiangular equilateral equilateral polygon equimultiples Euclid exterior angle fore four right angles given straight line greater hypotenuse inscribed join less Let ABC Let the straight line BC magnitudes meet opposite angle parallel parallelepipeds parallelogram perpendicular polygon prism proportional proposition pyramid Q. E. D. COR Q. E. D. PROP radius ratio rectangle contained rectilineal figure remaining angle segment semicircle shewn side BC sine solid angle spherical angle spherical triangle Spherical Trigonometry straight line AC THEOR third touches the circle triangle ABC triangle DEF wherefore
Δημοφιλή αποσπάσματα
Σελίδα 58 - To a given straight line to apply a parallelogram, which shall be equal to a given triangle, and have one of its angles equal to a given rectilineal angle.
Σελίδα 26 - If two triangles have two sides of the one equal to two sides of the...
Σελίδα 46 - Wherefore, if a straight line, &c. QED PROP. XXIX. THEOR. s«e N. Ij'a straight line fall upon two parallel straight lines, it makes the alternate angles equal...
Σελίδα 74 - THEOR. //' a straight line be divided into two equal, and also into two unequal parts, the squares of the two unequal parts are together double of the square of half the line, and of the square of the line between the points of section.
Σελίδα 84 - An angle in a segment is the angle contained by two straight lines drawn from any point in the circumference of the segment to the extremities of the straight . line which is the base of the segment.
Σελίδα 411 - A plane rectilineal angle is the inclination of two straight lines to one another, which meet together, but are not in the same straight line.
Σελίδα 112 - 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 118 - IF from any point without a circle two straight lines be drawn, one of which cuts the circle, and the other touches it ; the rectangle contained by the whole line which cuts the circle, and the part of it without the circle, shall be equal to the square of the line which touches it.
Σελίδα 54 - Parallelograms upon the same base and between the same parallels, are equal to one another.
Σελίδα 49 - If a side of any triangle be produced, the exterior angle is equal to the two interior and opposite angles; and the three interior angles of every triangle are equal to two right angles.