4 Example.
If the distance from the Meridian be a just Quadrant, or 90 degrees
Astronomia Britannica exhibiting the doctrine of the sphere, and theory of the planets decimally by trigonometry, and by tables : fitted for the meridian of London ... / by John Newton ...
About this Item
- Title
- Astronomia Britannica exhibiting the doctrine of the sphere, and theory of the planets decimally by trigonometry, and by tables : fitted for the meridian of London ... / by John Newton ...
- Author
- Newton, John, 1622-1678.
- Publication
- London :: Printed for the author by R. and W. Leybourn, and are to be sold by Thomas Piercepoint ...,
- 1657.
- Rights/Permissions
-
To the extent possible under law, the Text Creation Partnership has waived all copyright and related or neighboring rights to this keyboarded and encoded edition of the work described above, according to the terms of the CC0 1.0 Public Domain Dedication (http://creativecommons.org/publicdomain/zero/1.0/). This waiver does not extend to any page images or other supplementary files associated with this work, which may be protected by copyright or other license restrictions. Please go to http://www.textcreationpartnership.org/ for more information.
- Subject terms
- Astronomy -- Early works to 1800.
- Planetary theory -- Early works to 1800.
- Astronomy -- Mathematics -- Early works to 1800.
- Link to this Item
-
http://name.umdl.umich.edu/A52255.0001.001
- Cite this Item
-
"Astronomia Britannica exhibiting the doctrine of the sphere, and theory of the planets decimally by trigonometry, and by tables : fitted for the meridian of London ... / by John Newton ..." In the digital collection Early English Books Online. https://name.umdl.umich.edu/A52255.0001.001. University of Michigan Library Digital Collections. Accessed June 4, 2024.
Pages
Page 45
then omitting the two first proportions, the angle of Inclination may be found at one operation, by this analogie.
As the tangent of the Complement of declination, is to Radius.
So is the sine of the Pole, to the cotangent of the angle of inclination.
Let then the declination be 23, and the Pole 45. I say,
| As the tangent of H M | 67 | 10. 372148•• |
| Is to Radius or the angle H M C | 90 | 10. 0000000 |
| So is the sine of M C | 45. | 9. 8494850 |
| To the Cotangent of H C M | 73. 30 | 9. 4773369 |
| Then as Radius, to the sine of M C | 45. | 9. 8494850 |
| So is the sine of H C M | 73. 30 | 9. 9812850 |
| To the sine of L M | 42. 63 | 9. 8307700 |
The height of the Pole above that Circle of position.