推理比率，并练习掌握它们！
你有没有对 cos(60) 和 sin(30) 的区别感到困惑？还是棕褐色（90）和棕褐色（45）？
培养三角比背后的直觉并每天练习测验（我们建议至少十个问题）！
关于Trigonometry Practice
最新版本6.0.1更新日志
Last updated on 2022年07月30日
Many feature additions:
- Six ratios
- Four quadrants
- Customize what you want to be quizzed on
- Specify the number of questions per round
- Review the questions you got wrong
- Six ratios
- Four quadrants
- Customize what you want to be quizzed on
- Specify the number of questions per round
- Review the questions you got wrong
更多