單位圓上的 (x, y) 座標就是 (cos, sin)
凯子巨人
—
- Resource Type
-
Activity
- Tags
-
- Target Group (Age)
- 14 – 18
- Language
- Chinese Traditional / 繁體中文
Error
A timeout occurred. Trying to re-save …
Sorry, but the server is not responding. Please wait a few minutes and then try to save again.
