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HomeLớp 11Toán lớp 11 - Sách kết nối tri thứcBài 26. Khoảng cáchBài tập nâng cao
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T&iacute;nh kho\u1ea3ng c&aacute;ch t\u1eeb \u0111i\u1ec3m C \u0111\u1ebfn m\u1eb7t ph\u1eb3ng (SBD).<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{12\\sqrt{41}a}{41}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{\\sqrt{41}a}{12}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{12\\sqrt{61}a}{61}$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{a\\sqrt{61}}{12}$<\/span>"],"correct":"1","level":"3","hint":"","answer":"<p><span class=\"svgedit\"><svg height=\"270\" width=\"310\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\"> <g> &lt;title&gt;&lt;\/title&gt; <rect fill=\"#fff\" height=\"272\" id=\"canvas_background\" width=\"312\" x=\"-1\" y=\"-1\"><\/rect> <g display=\"none\" height=\"100%\" id=\"canvasGrid\" overflow=\"visible\" width=\"100%\" x=\"0\" y=\"0\"> <rect fill=\"url(#gridpattern)\" height=\"100%\" stroke-width=\"0\" width=\"100%\" x=\"0\" y=\"0\"><\/rect> <\/g> <\/g> <g> &lt;title&gt;&lt;\/title&gt; <image height=\"266\" id=\"svg_1\" width=\"310\" x=\"-1\" 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\" y=\"-1\"><\/image> <\/g> <\/svg><\/span><\/p><p>Ta c&oacute; SA =&nbsp;<span class=\"math-tex\">$\\sqrt{SB^2-AB^2}=\\sqrt{25a^2-16a^2}=3a$<\/span>.<\/p><p>Ta c&oacute; d(C, (SBD)) = d(A, (SBD)) = h.<\/p><p>T\u1ee9 di\u1ec7n ASBD c&oacute; c&aacute;c c\u1ea1nh AB, AD, AS \u0111&ocirc;i m\u1ed9t vu&ocirc;ng g&oacute;c v\u1edbi nhau v&agrave; AB = 4a, AD = 3a,<br \/>AS = 3a n&ecirc;n ta c&oacute;<\/p><p><span class=\"math-tex\">$\\dfrac{1}{h^2}=\\dfrac{1}{AB^2}+\\dfrac{1}{AD^2}+\\dfrac{1}{AS^2}=\\dfrac{1}{16a^2}+\\dfrac{1}{9a^2}+\\dfrac{1}{9a^2}=\\dfrac{41}{144a^2}$<\/span>&nbsp;&rArr;&nbsp;<span class=\"math-tex\">$h=\\dfrac{12a\\sqrt{41}}{41}$<\/span>.<\/p><p>V\u1eady d(C, (SBD)) =&nbsp;<span class=\"math-tex\">$\\dfrac{12a\\sqrt{41}}{41}$<\/span>.<\/p><p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>A.<\/strong>&nbsp;<span class=\"math-tex\">$\\dfrac{12\\sqrt{41}a}{41}$<\/span>.<\/span><\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2024-05-23 04:17:50","option_type":"math","len":0},{"id":"5678","post_id":"7135","mon_id":"1158924","chapter_id":"1159174","question":"<p>Cho h&igrave;nh l\u1eadp ph\u01b0\u01a1ng ABCD.A&#39;B&#39;C&#39;D&#39; c\u1ea1nh a. T&iacute;nh kho\u1ea3ng c&aacute;ch gi\u1eefa hai \u0111\u01b0\u1eddng th\u1eb3ng AB&#39; v&agrave; CD&#39;.<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{a\\sqrt{2}}{2}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$a$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$a\\sqrt{2}$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$2a$<\/span>"],"correct":"2","level":"3","hint":"","answer":"<p><span class=\"svgedit\"><svg height=\"220\" width=\"240\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\"> <g>&lt;title&gt;&lt;\/title><rect fill=\"#fff\" height=\"222\" id=\"canvas_background\" width=\"242\" x=\"-1\" y=\"-1\"><\/rect> <g display=\"none\" height=\"100%\" id=\"canvasGrid\" overflow=\"visible\" width=\"100%\" x=\"0\" y=\"0\"> <rect fill=\"url(#gridpattern)\" height=\"100%\" stroke-width=\"0\" width=\"100%\" x=\"0\" y=\"0\"><\/rect> <\/g> <\/g> <g>&lt;title&gt;&lt;\/title><image height=\"214\" id=\"svg_1\" width=\"233\" x=\"1.5\" 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\" y=\"1\"><\/image> <\/g> <\/svg><\/span><\/p><p>Do AB&#39; \/\/ (CDD&#39;C&#39;) n&ecirc;n ta c&oacute;<\/p><p>d(AB&#39;, CD&#39;) = d(AB&#39;, (CDD&#39;C&#39;)) = d(A, (CDD&#39;C&#39;)) = AD = a.<\/p><p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>B.<\/strong>&nbsp;<span class=\"math-tex\">$a$<\/span>.<\/span><\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2024-05-23 04:25:03","option_type":"math","len":0},{"id":"5680","post_id":"7135","mon_id":"1158924","chapter_id":"1159174","question":"<p>Cho h&igrave;nh h\u1ed9p ch\u1eef nh\u1eadt EFGH.E&#39;F&#39;G&#39;H&#39; c&oacute; EF&nbsp;= 3a, EH = 4a, EE&#39; = 12a, v\u1edbi<br \/>0 &lt; a&nbsp;&isin; N. Kho\u1ea3ng c&aacute;ch gi\u1eefa hai \u0111\u01b0\u1eddng th\u1eb3ng EF&#39; v&agrave; GH&#39; b\u1eb1ng<\/p>","options":["<strong>A.<\/strong> 12a","<strong>B.<\/strong> 3a","<strong>C.<\/strong> 2a","<strong>D.<\/strong> 4a"],"correct":"4","level":"3","hint":"","answer":"<p><span class=\"svgedit\"><svg height=\"280\" width=\"300\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\"> <g> &lt;title&gt;&lt;\/title&gt; <rect fill=\"#fff\" height=\"282\" id=\"canvas_background\" width=\"302\" x=\"-1\" y=\"-1\"><\/rect> <g display=\"none\" id=\"canvasGrid\"> <rect fill=\"url(#gridpattern)\" height=\"100%\" id=\"svg_2\" stroke-width=\"0\" width=\"100%\" x=\"0\" y=\"0\"><\/rect> <\/g> <\/g> <g> &lt;title&gt;&lt;\/title&gt; <image height=\"276\" id=\"svg_3\" width=\"289\" x=\"4.5\" 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\" y=\"0\"><\/image> <\/g> <\/svg><\/span><\/p><p>Ta c&oacute; EF&#39;&nbsp;&sub; (EFF&#39;E&#39;), GH&#39;&nbsp;&sub; (GHH&#39;G&#39;), (EFF&#39;E&#39;) \/\/ (GHH&#39;G&#39;)<\/p><p>&rArr; d(EF&#39;, GH&#39;) = d((EFF&#39;E&#39;), (GHH&#39;G&#39;)) = d(E, (GHH&#39;G&#39;)).<\/p><p>V&igrave; EH&nbsp;<span class=\"math-tex\">$\\bot$<\/span>&nbsp;(GHH&#39;G&#39;) n&ecirc;n d(E, (GHH&#39;G&#39;)) = EH = 4a.<\/p><p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>D.<\/strong> 4a.<\/span><\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2024-05-23 04:32:54","option_type":"txt","len":0}]}
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