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| 1. | ratio of the adjacent side to the hypotenuse. |
| 直角三角形的一个角的邻边与斜边之比。 |
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| 2. | To touch at one end or side; lie adjacent. |
| 邻接，毗邻在一端或一边相邻；位置毗邻的 |
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| 3. | ratio of the opposite to the adjacent side. |
| 直角三角形的一个角的对边与邻边之比。 |
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| 4. | ratio of the hypotenuse to the adjacent side. |
| 直角三角形的斜边与一个角的邻边之比。 |
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