Read Edit View history 正弦定理 zhèngxiándìnglǐ law of sines Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 正弦定理 · zhèngxiándìnglǐ · law of sines 2026/03/04 正弦定理 zhèngxiándìnglǐ law of sines law of sines 我们可以利用正弦定理来求解三角形的未知边长。 created sense Mar 4, 2026, 02:25 AM