我想让你们了解最简单的反三角函数，但不需要了解太多。

I would like you to know the easiest inverse trig functions, but not much.

youdao

现在我不再用三角函数，不用再查元素周期表，不用再设计火山模型，不再做句式分解、背诵单词，但我每天都在读书。

I no longer use trigonometry, I don't refer to the periodic table, and I don't build models of volcanoes. I've given up diagramming sentences or memorizing spelling words but I read every day.

youdao

它的功能还包含计算三角函数，阶乘，排列和组合的计算。

Some of the features include trigonometry, factorials, permutations and combinations.

youdao

If you go back to your trigonometry, That's another example where knowing the trigonometry is very helpful.

回顾一下学过的三角函数,这个例子再次佐证了熟知三角函数是多么有用

耶鲁公开课 - 基础物理课程节选

If you don't know how to measure anything, you are doing algebra and trigonometry.

如果你不知道如何进行测量,你就是在研究代数或者三角函数了

耶鲁公开课 - 基础物理课程节选

You can square this guy and add it to the square of this guy and you will find, using the magic of trigonometry, that this is true.

你可以把这两个式子平方相加,再用一下三角函数的性质,你会发现这是正确的

耶鲁公开课 - 基础物理课程节选