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修改1397题面

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wangweiye7840 2024-02-21 17:28:49 +08:00
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commit da0b3581bb
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题库0.3/Problems.json
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@ -47115,7 +47115,7 @@
},
"001397": {
"id": "001397",
"content": "(1) 已知角$\\alpha$的终边上有一点$P(3a,-4a), \\ (a\\ne 0)$, 则$2\\sin\\alpha+\\cos\\alpha=$\\blank{50}.\\\\ \n(2) 设$M(x,-5)$是角$\\alpha$终边上的一点, 若$\\sin\\alpha=-\\dfrac{5}{13}$, 则$x$的值为\\blank{50}.\\\\ \n(3) 若角$\\alpha$的终边上有一点$P(3m,-4m)$($m<0$), 则$\\sin\\alpha\\cdot\\tan\\alpha$的值为\\blank{50}.\\\\ \n(4) 已知$\\cos\\alpha=-\\dfrac{3}{5}$, 且角$\\alpha$的终边经过点$P(x,-4)$, 则角$\\alpha$是第\\blank{10}象限角, 点$P$的横坐标$x=$\\blank{20}, $\\sin\\alpha=$\\blank{30}, $\\tan\\alpha=$\\blank{30}.",
"content": "(1) 已知角$\\alpha$的终边上有一点$P(3a,-4a), \\ (a\\ne 0)$, 则$2\\sin\\alpha+\\cos\\alpha=$\\blank{50}.\\\\ \n(2) 设$M(x,-5)$是角$\\alpha$终边上的一点, 若$\\sin\\alpha=-\\dfrac{5}{13}$, 则$x$的值为\\blank{50}.\\\\ \n(3) 若角$\\alpha$的终边上有一点$P(3m,-4m)$($m<0$), 则$\\sin\\alpha\\cdot\\tan\\alpha$的值为\\blank{50}.\\\\ \n(4) 已知$\\cos\\alpha=-\\dfrac{3}{5}$, 且角$\\alpha$的终边经过点$P(x,-4)$, 则点$P$的横坐标$x=$\\blank{20}, $\\sin\\alpha=$\\blank{30}, $\\tan\\alpha=$\\blank{30}.",
"objs": [],
"tags": [
"第三单元"
@ -47131,7 +47131,8 @@
"origin": "2016届创新班作业\t2106-任意角的三角比",
"edit": [
"20220625\t王伟叶",
"20240131\t王伟叶"
"20240131\t王伟叶",
"20240221\t王伟叶"
],
"same": [],
"related": [],