| John Casey - 1888 - عدد الصفحات: 279
...Similarly, AX is the polar of P, and P the pole 0/AX, 45 Prop. £5. — If A and B be two points, suck that the polar of 'A. passes through B, then the polar of B passes through A. Dem.— Let the polar of A be the line PB ; then PB is JL to CP (C being the centre).... | |
| William John McClelland, Thomas Preston - 1893 - عدد الصفحات: 402
...the angular distances of the vertices of the other, from the tangent at that oint. 152. ""heorem. — If .A. and B be two points on a sphere, and if the ^ olar of A passes through B ; then the polar of B will pass through A. Fig. 59. Let A'B (fig. 59)... | |
| John Casey - 1895 - عدد الصفحات: 216
...Similarly, AX is the polar of P, and P the pole of Prop. 25. — If A and B be two points, such that the polar of A passes through B, then the polar of B passes through A. Dem. — Let the polar of A be the line PB ; then PB is -L to CP (C being the centre).... | |
| Alan Sanders - 1901 - عدد الصفحات: 260
...second is 7 ft. long. Find the length of each secant. 535. EXERCISE. If A and B arc two points such that the polar of A passes through B, then the polar of B passes through A. Let CS, the polar of A, pass through B. To Prove that the polar of B passes through... | |
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