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Following in his father's footsteps many years later, Sir Malcolm's son.
网校学员傍晚天**在学习英语零基础直达PETS三级/公共英语三级【年中特惠班】时提出了此问题，已有2人帮助了TA。
网校助教
czs3634
同学你好，该知识点来自沪江网校《英语零基础直达PETS三级/公共英语三级【年中特惠班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。
设tan(A/2)=tsinA=2t/(1+t²) (A≠2kπ+π，k∈Z)
tanA=2t/(1-t²) (A≠2kπ+π，k∈Z)
cosA=(1-t²)/(1+t²) (A≠2kπ+π k∈Z)
网校助教
czs3634
同学你好，该知识点来自沪江网校《英语零基础直达PETS三级/公共英语三级【年中特惠班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。
万能替换就是这样设的版权申明：知识和讨论来自课程：《英语零基础直达PETS三级/公共英语三级【年中特惠班】》的学员和老师，如果想了解更多，可以报名参加课程学习。所有知识讨论内容，版权归作者及沪江网校所有。
英语零基础直达PETS三级/公共英语三级【年中特惠班】
已有20人在本课程中发现了1277个知识
已有1024个知识得到了老师的回复
本课程热门知识点
- as a result of the delays, one man got on the wrong bus.
-
There rose in his imagination visions of a world empire.
If ever again there happens an accident like that, we will have only ourselves to blame. - He will take part in an iportant race across the Atlantic.
- I have got a bird's eye view of the Palace from this window.
- swimming is said to be the healthiest form of exercise.
- She replied that she would not come.
- If you can make up your mind about the color I can start on the outside of your house early next week while right now
- the night before在这句话怎么翻译
- He crashed into the tree because he was trying not to hit a box that had fallen off the truck ahead of him.
- who 和whom的区别和使用方法