{"version":"1.0","provider_name":"Tin t\u1ee9c c\u00f4ng ngh\u1ec7 - HoangHaMobile","provider_url":"https:\/\/hoanghamobile.com\/tin-tuc","title":"H\u1ec7 th\u1ee9c l\u01b0\u1ee3ng trong tam gi\u00e1c: \u0111\u1ecbnh l\u00fd cosin, sin, di\u1ec7n t\u00edch","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"bRk3VKbpXn\"><a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/he-thuc-luong-trong-tam-giac\/\">H\u1ec7 th\u1ee9c l\u01b0\u1ee3ng trong tam gi\u00e1c: \u0111\u1ecbnh l\u00fd cosin, sin, di\u1ec7n t\u00edch<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/he-thuc-luong-trong-tam-giac\/embed\/#?secret=bRk3VKbpXn\" width=\"600\" height=\"338\" title=\"&#8220;H\u1ec7 th\u1ee9c l\u01b0\u1ee3ng trong tam gi\u00e1c: \u0111\u1ecbnh l\u00fd cosin, sin, di\u1ec7n t\u00edch&#8221; &#8212; Tin t\u1ee9c c\u00f4ng ngh\u1ec7 - HoangHaMobile\" data-secret=\"bRk3VKbpXn\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/hoanghamobile.com\/tin-tuc\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","thumbnail_url":"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/he-thuc-luong-trong-tam-giac.jpg","thumbnail_width":1200,"thumbnail_height":628,"description":"H\u1ec7 th\u1ee9c l\u01b0\u1ee3ng trong tam gi\u00e1c g\u1ed3m \u0111\u1ecbnh l\u00fd cosin, \u0111\u1ecbnh l\u00fd sin v\u00e0 c\u00f4ng th\u1ee9c di\u1ec7n t\u00edch. Xem \u0111\u1ea7y \u0111\u1ee7 c\u00f4ng th\u1ee9c, v\u00ed d\u1ee5 c\u00f3 l\u1eddi gi\u1ea3i t\u1ea1i Ho\u00e0ng H\u00e0 Mobile."}