收录高三寒假作业22新题

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wangweiye7840 2024-01-25 10:53:59 +08:00
parent 4344b04aea
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20240125-105050
023779:023788
20240125-105348
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"space": "4em",
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"023789": {
"id": "023789",
"content": "若 $\\tan \\alpha=2$, 且 $\\alpha$ 为第三象限的角, 则 $\\sin \\alpha=$\\blank{50}, $\\cos \\alpha=$\\blank{50}.",
"objs": [],
"tags": [],
"genre": "填空题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
"edit": [
"20240125\t毛培菁"
],
"same": [],
"related": [],
"remark": "",
"space": "",
"unrelated": []
},
"023790": {
"id": "023790",
"content": "若 $1+\\cos ^2 \\theta=3 \\sin \\theta \\cos \\theta$, 则 $\\tan \\theta$ 的值为\\blank{50}.",
"objs": [],
"tags": [],
"genre": "填空题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
"edit": [
"20240125\t毛培菁"
],
"same": [],
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"remark": "",
"space": "",
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},
"023791": {
"id": "023791",
"content": "若 $\\sin \\theta \\cos \\theta=\\dfrac{1}{8}$, $\\theta \\in(\\dfrac{\\pi}{4}, \\dfrac{\\pi}{2})$, 则 $\\cos \\theta-\\sin \\theta=$\\blank{50}.",
"objs": [],
"tags": [],
"genre": "填空题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
"edit": [
"20240125\t毛培菁"
],
"same": [],
"related": [],
"remark": "",
"space": "",
"unrelated": []
},
"023792": {
"id": "023792",
"content": "若 $\\dfrac{2 \\cos x+3 \\sin x}{\\sin x-2 \\cos x}=7$, 则 $\\tan x=$\\blank{50}, $\\cos ^2 x-5 \\sin ^2 x-2=$\\blank{50}.",
"objs": [],
"tags": [],
"genre": "填空题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
"edit": [
"20240125\t毛培菁"
],
"same": [],
"related": [],
"remark": "",
"space": "",
"unrelated": []
},
"023793": {
"id": "023793",
"content": "若 $f(\\alpha)=\\dfrac{2 \\sin (\\pi+\\alpha) \\cos (\\pi-\\alpha)-\\cos (\\pi+\\alpha)}{1+\\sin ^2 \\alpha+\\cos (\\dfrac{3 \\pi}{2}+\\alpha)-\\sin ^2(\\dfrac{\\pi}{2}+\\alpha)}$($1+2 \\sin \\alpha \\neq 0$), 则$f(-\\dfrac{23 \\pi}{6})=$\\blank{50}.",
"objs": [],
"tags": [],
"genre": "填空题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
"edit": [
"20240125\t毛培菁"
],
"same": [],
"related": [],
"remark": "",
"space": "",
"unrelated": []
},
"023794": {
"id": "023794",
"content": "若 $\\dfrac{\\sin \\alpha+3 \\cos \\alpha}{3 \\cos \\alpha-\\sin \\alpha}=5$, 则 $\\cos ^2 \\alpha+\\dfrac{1}{2}\\sin 2 \\alpha=$\\blank{50}.",
"objs": [],
"tags": [],
"genre": "填空题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
"edit": [
"20240125\t毛培菁"
],
"same": [],
"related": [],
"remark": "",
"space": "",
"unrelated": []
},
"023795": {
"id": "023795",
"content": "若 $\\sin \\alpha=\\dfrac{k-3}{k+5}$, $\\cos \\alpha=\\dfrac{4-2 k}{k+5}$, $\\dfrac{\\pi}{2}<\\alpha<\\pi$, 则 $\\tan \\alpha=$\\blank{50}.",
"objs": [],
"tags": [],
"genre": "填空题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
"edit": [
"20240125\t毛培菁"
],
"same": [],
"related": [],
"remark": "",
"space": "",
"unrelated": []
},
"023796": {
"id": "023796",
"content": "已知 $\\cos \\alpha=\\dfrac{4}{5}$, 则 $\\dfrac{\\cos (\\alpha-\\dfrac{\\pi}{2})+2 \\sin (3 \\pi-\\alpha)}{2 \\tan (3 \\pi+\\alpha)+\\cot (\\dfrac{\\pi}{2}+\\alpha)}$ 的值为\\blank{50}.",
"objs": [],
"tags": [],
"genre": "填空题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
"edit": [
"20240125\t毛培菁"
],
"same": [],
"related": [],
"remark": "",
"space": "",
"unrelated": []
},
"023797": {
"id": "023797",
"content": "已知 $\\sin \\theta+\\cos \\theta=-\\dfrac{1}{5}$ 且 $\\theta \\in(0, \\pi)$, 则 $\\tan \\theta$ 的值为\\blank{50}.",
"objs": [],
"tags": [],
"genre": "填空题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
"edit": [
"20240125\t毛培菁"
],
"same": [],
"related": [],
"remark": "",
"space": "",
"unrelated": []
},
"023798": {
"id": "023798",
"content": "已知 $\\tan x-\\dfrac{1}{\\cos x}=\\sqrt{\\dfrac{1-\\sin x}{1+\\sin x}}$, 求 $x$ 的取值范围.",
"objs": [],
"tags": [],
"genre": "解答题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
"edit": [
"20240125\t毛培菁"
],
"same": [],
"related": [],
"remark": "",
"space": "4em",
"unrelated": []
},
"030001": {
"id": "030001",
"content": "若$x,y,z$都是实数, 则:(填写``\\textcircled{1} 充分非必要、\\textcircled{2} 必要非充分、\\textcircled{3} 充要、\\textcircled{4} 既非充分又非必要''之一)\\\\\n(1) ``$xy=0$''是``$x=0$''的\\blank{50}条件;\\\\\n(2) ``$x\\cdot y=y\\cdot z$''是``$x=z$''的\\blank{50}条件;\\\\\n(3) ``$\\dfrac xy=\\dfrac yz$''是``$xz=y^2$''的\\blank{50}条件;\\\\\n(4) ``$|x |>| y|$''是``$x>y>0$''的\\blank{50}条件;\\\\\n(5) ``$x^2>4$''是``$x>2$'' 的\\blank{50}条件;\\\\\n(6) ``$x=-3$''是``$x^2+x-6=0$'' 的\\blank{50}条件;\\\\\n(7) ``$|x+y|<2$''是``$|x|<1$且$|y|<1$'' 的\\blank{50}条件;\\\\\n(8) ``$|x|<3$''是``$x^2<9$'' 的\\blank{50}条件;\\\\\n(9) ``$x^2+y^2>0$''是``$x\\ne 0$'' 的\\blank{50}条件;\\\\\n(10) ``$\\dfrac{x^2+x+1}{3x+2}<0$''是``$3x+2<0$'' 的\\blank{50}条件;\\\\\n(11) ``$0<x<3$''是``$|x-1|<2$'' 的\\blank{50}条件.",