正弦定理和两角和与差公式的应用
来源:学生作业帮 编辑:搜狗做题网作业帮 分类:数学作业 时间:2024/07/06 01:13:12
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![正弦定理和两角和与差公式的应用](/uploads/image/z/19338711-15-1.jpg?t=%E6%AD%A3%E5%BC%A6%E5%AE%9A%E7%90%86%E5%92%8C%E4%B8%A4%E8%A7%92%E5%92%8C%E4%B8%8E%E5%B7%AE%E5%85%AC%E5%BC%8F%E7%9A%84%E5%BA%94%E7%94%A8)
解题思路: 利用正弦定理,把所有边都利用角来表示,在化简即可。
解题过程:
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最终答案:略
解题过程:
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最终答案:略