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向量旋转法是解几何问题的一种方法,应用此法,有时可使某些几何问题易于着手,从而得解。为了便于叙述,我们采用以下记法:
The vector rotation method is a method to solve geometric problems. Applying this method can sometimes make certain geometric problems easy to get started, so as to be solved. For ease of description, we use the following notation: