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HomeLớp 11Toán lớp 11 - Sách kết nối tri thứcBài 1. Giá trị lượng giác của góc lượng giác.Bài tập trung bình
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y1=\"19.11286\" y2=\"272.27839\"><\/line> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_2\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(1,0,0,1.140385285120999,0,-15.40007431082393) \" x=\"124.9496\" xml:space=\"preserve\" y=\"254.26427\">V<\/text> <\/g> <g id=\"svg_6\" stroke=\"null\" transform=\"rotate(180 120.31704711914061,133.03152465820312) \"> <line fill=\"none\" id=\"svg_4\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-width=\"1.5\" x1=\"120.65248\" x2=\"120.51611\" y1=\"2.67786\" y2=\"255.69396\"><\/line> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_5\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(1,0,0,1.1397122184374098,0,39.62549128105849) \" x=\"112.51611\" xml:space=\"preserve\" y=\"191.58161\">V<\/text> <\/g> <ellipse cx=\"120.36363\" cy=\"149.79544\" fill=\"none\" id=\"svg_7\" rx=\"92.5\" ry=\"92\" stroke=\"#000\" stroke-width=\"1.5\"><\/ellipse> <text fill=\"#ff0000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" font-weight=\"bold\" id=\"svg_9\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"242.86363\" xml:space=\"preserve\" y=\"173.79544\">x<\/text> <text fill=\"#ff0000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" font-weight=\"bold\" id=\"svg_10\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"128.86363\" xml:space=\"preserve\" y=\"26.79545\">y<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_12\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"102.86363\" xml:space=\"preserve\" y=\"54.79545\">B<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_13\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"6.86363\" xml:space=\"preserve\" y=\"147.79544\">A'<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_14\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"216.86363\" xml:space=\"preserve\" y=\"141.79544\">A<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_15\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"94.86363\" xml:space=\"preserve\" y=\"263.79544\">B'<\/text> <text fill=\"#ff0000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" font-weight=\"bold\" id=\"svg_16\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"123.86363\" xml:space=\"preserve\" y=\"170.79544\">O<\/text> <\/g> <\/svg><\/span><\/p>","options":["<strong>A.<\/strong> 90° ","<strong>B.<\/strong> –90° ","<strong>C.<\/strong> –90° + k360° (k ∈ Z)","<strong>D.<\/strong> 90° + k360° (k ∈ Z)"],"correct":"4","level":"2","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>D.<\/strong> 90° + k360° (k ∈ Z)<\/span><\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2023-11-12 03:22:31","option_type":"txt","len":2},{"id":"4689","post_id":"7031","mon_id":"1158924","chapter_id":"1159141","question":"<p>Góc l\u01b0\u1ee3ng giác có s\u1ed1 \u0111o <span class=\"math-tex\">$-\\dfrac{7\\pi}{4}$<\/span> \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1edfi \u0111i\u1ec3m nào trên \u0111\u01b0\u1eddng tròn l\u01b0\u1ee3ng giác (tham kh\u1ea3o hình v\u1ebd)?<\/p><p><span class=\"svgedit\"><svg height=\"300\" width=\"300\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\"> <g><title><\/title><rect fill=\"#fff\" height=\"302\" id=\"canvas_background\" width=\"302\" x=\"-1\" y=\"-1\"><\/rect> <g display=\"none\" height=\"100%\" id=\"canvasGrid\" overflow=\"visible\" width=\"100%\" x=\"0\" y=\"0\"> <rect 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y=\"3\"><\/image> <\/g> <\/svg><\/span><\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$M_1$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$M_2$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$M_3$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$M_4$<\/span>"],"correct":"1","level":"2","hint":"","answer":"<p><span class=\"math-tex\">$-\\dfrac{7\\pi}{4}=\\dfrac{\\pi}{4}-2\\pi$<\/span><\/p><p>Do \u0111ó góc l\u01b0\u1ee3ng giác <span class=\"math-tex\">$-\\dfrac{7\\pi}{4}$<\/span> \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1edfi \u0111i\u1ec3m <span style=\"color:#16a085;\"><span class=\"math-tex\">$M_1$<\/span><\/span><\/p><p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>A.<\/strong> <span class=\"math-tex\">$M_1$<\/span><\/span><\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2023-11-12 03:36:46","option_type":"math","len":0},{"id":"4691","post_id":"7031","mon_id":"1158924","chapter_id":"1159141","question":"<p>Cho <span class=\"math-tex\">$cos\\alpha=\\dfrac{3}{5}$<\/span> v\u1edbi <span class=\"math-tex\">$0<\\alpha <\\dfrac{\\pi}{2}$<\/span>. Tính giá tr\u1ecb c\u1ee7a tanα.<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{-3}{4}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{4}{3}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{16}{15}$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{-4}{3}$<\/span>"],"correct":"2","level":"2","hint":"","answer":"<p>Ta có: <span class=\"math-tex\">$1+tan^2\\alpha=\\dfrac{1}{cos^2\\alpha}$<\/span> <\/p><p>suy ra <span class=\"math-tex\">$tan^2\\alpha=\\dfrac{1}{cos^2\\alpha}-1=\\dfrac{1}{9}-1=\\dfrac{16}{9}$<\/span><\/p><p>Vì <span class=\"math-tex\">$0<\\alpha <\\dfrac{\\pi}{2}$<\/span> nên tanα > 0. <\/p><p>V\u1eady tanα = <span class=\"math-tex\">$\\dfrac{4}{3}$<\/span><\/p><p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{4}{3}$<\/span><\/span><\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2023-11-12 03:45:24","option_type":"math","len":0}]}