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修改21528答案

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wangweiye7840 2024-02-04 15:54:50 +08:00
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题库0.3/Problems.json
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@ -584076,7 +584076,7 @@
"第三单元"
],
"genre": "解答题",
"ans": "(1) 当$\\alpha$在第一象限时, $\\sin (2 \\pi-\\alpha)=-\\dfrac{\\sqrt{3}}{2}$;\n当$\\alpha$在第三象限时, $\\sin (2 \\pi-\\alpha)=\\dfrac{\\sqrt{3}}{2}$.\\\\\n(2) 当$\\alpha$在第一象限时, $\\dfrac{1}{\\tan [\\dfrac{(2 k+1) \\pi}{2}+\\alpha]}=-\\sqrt{3}$;\n当$\\alpha$在第四象限时, $\\dfrac{1}{\\tan [\\dfrac{(2 k+1) \\pi}{2}+\\alpha]}=\\sqrt{3}$.",
"ans": "(1) 当$\\alpha$在第一象限时, $\\sin (2 \\pi-\\alpha)=-\\dfrac{\\sqrt{3}}{2}$;\n当$\\alpha$在第四象限时, $\\sin (2 \\pi-\\alpha)=\\dfrac{\\sqrt{3}}{2}$.\\\\\n(2) 当$\\alpha$在第一象限时, $\\dfrac{1}{\\tan [\\dfrac{(2 k+1) \\pi}{2}+\\alpha]}=-\\sqrt{3}$;\n当$\\alpha$在第四象限时, $\\dfrac{1}{\\tan [\\dfrac{(2 k+1) \\pi}{2}+\\alpha]}=\\sqrt{3}$.",
"solution": "",
"duration": -1,
"usages": [
@ -584091,7 +584091,8 @@
],
"origin": "2025届高一下校本作业",
"edit": [
"20230209\t王伟叶"
"20230209\t王伟叶",
"20240204\t王伟叶"
],
"same": [],
"related": [],