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如何求线面角的正弦值呢？作图仍是基本功，三垂线定理合理使用
为助力高考数学，特讲解高三一轮复习中的易错题1000道，根据复习进度，逐步讲解错题，涉及高一到高三的基础内容；研究基础习题，透析高效解法，您值得学习，本节内容是如何求线面角的正弦值呢@头条教育
高三数学一轮复习错题没人讲解，可看这里，解决你没搞明白的问题474/893
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