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正弦定理与余弦定理练习
正弦定理与余弦定理 · 1–12
用正弦定理或余弦定理求解，结果精确到十分位。
1.a = 22, b = 22, C = 78°c ≈
2.a = 10, b = 14, C = 81°c ≈
3.a = 18, b = 5, C = 133°c ≈
4.a = 21, b = 16, C = 89°c ≈
5.a = 19, b = 16, C = 106°c ≈
6.a = 21, b = 21, C = 102°c ≈
7.a = 8, b = 16, C = 29°c ≈
8.a = 16, b = 25, C = 66°c ≈
9.a = 21, b = 24, C = 129°c ≈
10.a = 23, b = 10, C = 58°c ≈
11.a = 21, b = 14, C = 84°c ≈
12.a = 15, b = 9, C = 115°c ≈
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