| Charles Hutton - Mathematics - 1811 - 424 pages
...180°. Consequently, ABC = 180- — APC, and BAC = 180« — (ABC+ACB) = 180° — (ABC + APB). 4. If one of the objects, viewed from a further station,...vane or staff in the centre of a steeple, it will frequently happen that such object, when the observer comes near it, is both invisible and inaccessible.... | |
| Charles Hutton - Mathematics - 1812 - 624 pages
...180". Consequently, ABC _ 180° — APC, and BAC = 18O° — (ABC + ACB) = 180" — (ABC + APB). 4. If one of the objects, viewed from a further station,...vane or staff in the centre of a steeple, it will frequently • happen that such object, when the observer comes near it, i> both invisible and inaccessible.... | |
| Olinthus Gregory - Plane trigonometry - 1816 - 278 pages
...180°. Consequently, ABC = 180° — APC, and BAC = 180° - (ABC + ACB) = 180° — (ABC + APB). 4. If one of the objects, viewed from a further station,...vane or staff in the centre of a steeple, it will frequently happen that such object, when the observer comes near it, is both invisible and inaccessible.... | |
| Charles Hutton - Mathematics - 1816 - 618 pages
...Consequently, ABC — I80» — APC, and BAC = 180° — (ABC+AC^B) = 18u° — • (ABC + APB). 4. It one of the objects, viewed from a further station, be a vane or staff in the centre of a s'etp'e, it will frequently happen that such objec:, when the observer comes near it, ii . boih invisible... | |
| Olinthus Gregory - Plane trigonometry - 1816 - 276 pages
...180°. Consequently, ABC = 180° — APC, and BAC = 160° — (ABC + ACE) = 180°— (ABC + APB). 4. If one of the objects, viewed from a further station, be a vane or stall' in the centre of a steeple, it will frequently happen that such object, when the observer comes... | |
| John Farrar - Logarithms - 1822 - 270 pages
...130), we shall have ABC = 180° — APC, also BAC = 180° — (ABC + ACB) = 180° — (ABC + APD). 172. If one of the objects viewed from a further station...inaccessible. Still there are various methods of finding Fig. 90. the exact angle at C(Jig. 90). Suppose, for example, the signalstaff to be in the centre of... | |
| Charles Hutton - Mathematics - 1822 - 680 pages
...= 180°. Goijsequently, ABC = 180°— APC, and BAC =180°— (ABC+ACB) ==180° •- (ABC+ APB). 4, If one of the objects, viewed from a further station,...vane or staff in the centre of a steeple, it will frequently happen that such object, when the observer comes near it/ is both invisible and inaccessible.... | |
| John Farrar - Trigonometry - 1833 - 274 pages
...quadrilateral inscribed in a circle, being equal to 180° (Georn, 130), we shall have ABC - 1SO0 — APC, also BAC = 180° — (ABC + ACB) = 180° — (ABC...inaccessible. Still there are various methods of finding the Fig. 90. exact angle at C (fig. 90). Suppose, for example, the signal staff to be in the centre... | |
| John Farrar - Trigonometry - 1833 - 276 pages
...(Geom. 130), we shall have ABC = ISO ° — APC, also BAC = 180° — (ABC + ACB) = 180°—(ABC + APB). 172. If one of the objects viewed from a further...inaccessible. Still there are various methods of finding the Fig. 90. exact angle at C (fig- 90). Suppose, for example, the signal staff to be in the centre... | |
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