添加几个答案
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@ -48,3 +48,32 @@ remark
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(20240318主要错因) 漏解, 没考虑到所有情况, 其中$A$为顶角, $A$为钝角的情况容易被漏掉
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ans
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008393
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$\dfrac{2\pi}{3}$
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024718
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$4$
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024720
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$-4$
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003773
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(1) $\dfrac{\pi}{3}$; (2) $\dfrac{3\sqrt{3}}{2}$
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001366
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(1) F; (2) F; (3) T; (4) T
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006360
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B
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013849
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B
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031580
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A
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003136
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(1) $\dfrac{5\pi}{6}-\arcsin\dfrac{\sqrt{3}}{6}$; (2) $A=\dfrac{2\pi}{3}$, $B=\dfrac{\pi}{6}$, $c=2\sqrt{5}\cdot \sqrt[4]{3}$; (3) $(b,c)=(20-9\sqrt{2},20+9\sqrt{2})$, $(20+9\sqrt{2},20-9\sqrt{2})$, $(17\sqrt{2},7\sqrt{2})$或$(7\sqrt{2},17\sqrt{2})$
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@ -46424,7 +46424,7 @@
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"第三单元"
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],
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"genre": "填空题",
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"ans": "",
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"ans": "(1) F; (2) F; (3) T; (4) T",
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"solution": "",
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"duration": -1,
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"usages": [
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@ -99258,7 +99258,7 @@
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"第三单元"
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],
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"genre": "解答题",
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"ans": "",
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"ans": "(1) $\\dfrac{5\\pi}{6}-\\arcsin\\dfrac{\\sqrt{3}}{6}$; (2) $A=\\dfrac{2\\pi}{3}$, $B=\\dfrac{\\pi}{6}$, $c=2\\sqrt{5}\\cdot \\sqrt[4]{3}$; (3) $(b,c)=(20-9\\sqrt{2},20+9\\sqrt{2})$, $(20+9\\sqrt{2},20-9\\sqrt{2})$, $(17\\sqrt{2},7\\sqrt{2})$或$(7\\sqrt{2},17\\sqrt{2})$",
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"solution": "",
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"duration": -1,
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"usages": [],
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