{"common":{"save":0,"post_id":"7864","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"7984","post_id":"7864","mon_id":"1159278","chapter_id":"1159328","question":"<p>Trong tam giác vuông, m\u1ed7i c\u1ea1nh góc vuông b\u1eb1ng c\u1ea1nh huy\u1ec1n nhân v\u1edbi … ho\u1eb7c nhân v\u1edbi côsin góc k\u1ec1.<\/p>","options":["<strong>A.<\/strong> sin c\u1ee7a góc \u0111\u1ed1i","<strong>B.<\/strong> sin c\u1ee7a góc k\u1ec1","<strong>C.<\/strong> tan c\u1ee7a góc \u0111\u1ed1i","<strong>D.<\/strong> tan c\u1ee7a góc k\u1ec1"],"correct":"1","level":"1","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>A.<\/strong> sin c\u1ee7a góc \u0111\u1ed1i.<\/span><\/p><p>Trong tam giác vuông, m\u1ed7i c\u1ea1nh góc vuông b\u1eb1ng c\u1ea1nh huy\u1ec1n nhân v\u1edbi <span style=\"color:#16a085;\">sin c\u1ee7a góc \u0111\u1ed1i<\/span> ho\u1eb7c nhân v\u1edbi côsin góc k\u1ec1.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"127","test":"0","date":"2024-10-20 10:27:48","option_type":"txt","len":2},{"id":"7985","post_id":"7864","mon_id":"1159278","chapter_id":"1159328","question":"<p>Trong tam giác vuông, m\u1ed7i ... b\u1eb1ng c\u1ea1nh góc vuông kia nhân v\u1edbi tan c\u1ee7a góc \u0111\u1ed1i ho\u1eb7c nhân v\u1edbi cotan c\u1ee7a góc k\u1ec1.<\/p>","options":["<strong>A.<\/strong> c\u1ea1nh huy\u1ec1n","<strong>B.<\/strong> c\u1ea1nh góc vuông","<strong>C.<\/strong> c\u1ea1nh","<strong>D.<\/strong> \u0110áp án khác"],"correct":"2","level":"1","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>B.<\/strong> c\u1ea1nh góc vuông.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"127","test":"0","date":"2024-10-20 10:29:32","option_type":"txt","len":2},{"id":"7990","post_id":"7864","mon_id":"1159278","chapter_id":"1159328","question":"<p>Cho <span class=\"math-tex\">$\\triangle$<\/span>ABC vuông t\u1ea1i A , ta có:<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$BC=AB.\\sin B$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$BC=AC.\\sin B$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$AB = BC.\\sin B$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$AC = BC.\\sin B$<\/span>"],"correct":"4","level":"1","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>D.<\/strong> <span class=\"math-tex\">$AC = BC.\\sin B$<\/span>.<\/span><\/p><p>Trong tam giác vuông, m\u1ed7i c\u1ea1nh góc vuông b\u1eb1ng c\u1ea1nh huy\u1ec1n nhân v\u1edbi sin c\u1ee7a góc \u0111\u1ed1i.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"127","test":"0","date":"2024-10-21 01:49:19","option_type":"math","len":0}]}
