辅助角公式问题asinx+bcosx=Sqrt(a^2+b^2)sin(x+arctan(b/a))如果acosx+bsinx呢?为什么百度百科上是:acosx+bsinx=Sqrt(a^2+b^2)sin(x+arctan(a/b))?而我的辅导书上则是:acosx+bsinx=Sqrt(a^2+b^2)cos(x-arctan(b/a))?---
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/19 09:13:00
![辅助角公式问题asinx+bcosx=Sqrt(a^2+b^2)sin(x+arctan(b/a))如果acosx+bsinx呢?为什么百度百科上是:acosx+bsinx=Sqrt(a^2+b^2)sin(x+arctan(a/b))?而我的辅导书上则是:acosx+bsinx=Sqrt(a^2+b^2)cos(x-arctan(b/a))?---](/uploads/image/z/2532025-1-5.jpg?t=%E8%BE%85%E5%8A%A9%E8%A7%92%E5%85%AC%E5%BC%8F%E9%97%AE%E9%A2%98asinx%EF%BC%8Bbcosx%EF%BC%9DSqrt%28a%5E2%2Bb%5E2%29sin%28x%2Barctan%28b%2Fa%29%29%E5%A6%82%E6%9E%9Cacosx%EF%BC%8Bbsinx%E5%91%A2%3F%E4%B8%BA%E4%BB%80%E4%B9%88%E7%99%BE%E5%BA%A6%E7%99%BE%E7%A7%91%E4%B8%8A%E6%98%AF%EF%BC%9Aacosx%EF%BC%8Bbsinx%EF%BC%9DSqrt%28a%5E2%2Bb%5E2%29sin%28x%2Barctan%28a%2Fb%29%29%3F%E8%80%8C%E6%88%91%E7%9A%84%E8%BE%85%E5%AF%BC%E4%B9%A6%E4%B8%8A%E5%88%99%E6%98%AF%EF%BC%9Aacosx%EF%BC%8Bbsinx%EF%BC%9DSqrt%28a%5E2%2Bb%5E2%29cos%28x-arctan%28b%2Fa%29%29%3F---)
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