| 1821 - 708 sider
...angle, so is either of the other sides to the sine of its opposite angle. THEOREM III. In every plane triangle, it will be, as the sum of any two sides is to their difference, so is the tangtnt of half the sum of the two opposite angles to the tangent 'of half their difference... | |
| Nathaniel Bowditch - 1826 - 732 sider
...angle, so is either of the other sides to the sine of its opposite angle. THEOREM HI. . In every plane triangle, it will be, as the sum of any two sides is to their difference, su is the tangent of half the sum of the two opposite angles to the tangent 'tif half their difference... | |
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