I had been doing a lot of trig homework for a calculus class I was taking in undergrad and this number appears a lot.

大学上微积分课时我做了许多三角学的作业，作业中这个数经常出现。

youdao

That means you will have a little bit of trig to do in the integral.

这意味着，在积分的时候会遇到一点小麻烦。

youdao

That is actually not a good way to do it, because if I put sufficiently complicated trig functions in there then you might not be able to see that two terms are the same. Take an easy one.

这不是一个很好的办法，因为如果函数足够复杂，你可能就不会看出，这两项是相同的，举个简单例子。

youdao

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