{"id":9266,"date":"2022-01-05T00:39:45","date_gmt":"2022-01-04T19:09:45","guid":{"rendered":"https:\/\/mathemerize.com\/?p=9266"},"modified":"2022-01-05T00:40:52","modified_gmt":"2022-01-04T19:10:52","slug":"what-is-the-formula-of-cos-a-b-c","status":"publish","type":"post","link":"https:\/\/mathemerize.com\/what-is-the-formula-of-cos-a-b-c\/","title":{"rendered":"What is the Formula of Cos (A + B + C) ?"},"content":{"rendered":"<h2>Solution :<\/h2>\n<p>The formula of <strong>cos(A + B + C)<\/strong> is <strong>cos A cos B cos C &#8211; sin A sin B cos C &#8211; sin A cos B sin C &#8211; cos A sin B sin C.<\/strong><\/p>\n<p><strong>Proof :&nbsp;<\/strong><\/p>\n<p>We have,<\/p>\n<p>cos (A + B + C) = cos ((A + B) + C) = cos (A + B) cos C &#8211; sin (A + B) sin C<\/p>\n<p>cos (A + B + C) = (cos A cos B &#8211; sin A sin B) cos C &#8211; (sin A cos B + cos A sin B) sin C<\/p>\n<p>cos (A + B + C) = cos A cos B cos C &#8211; sin A sin B cos C &#8211; sin A cos B sin C &#8211; cos A sin B sin C<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Solution : The formula of cos(A + B + C) is cos A cos B cos C &#8211; sin A sin B cos C &#8211; sin A cos B sin C &#8211; cos A sin B sin C. Proof :&nbsp; We have, cos (A + B + C) = cos ((A + B) + C) &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/mathemerize.com\/what-is-the-formula-of-cos-a-b-c\/\"> <span class=\"screen-reader-text\">What is the Formula of Cos (A + B + C) ?<\/span> Read More &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":""},"categories":[43,60],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.12 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is the Formula of Cos (A + B + C) ? - Mathemerize<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mathemerize.com\/what-is-the-formula-of-cos-a-b-c\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is the Formula of Cos (A + B + C) ? - Mathemerize\" \/>\n<meta property=\"og:description\" content=\"Solution : The formula of cos(A + B + C) is cos A cos B cos C &#8211; sin A sin B cos C &#8211; sin A cos B sin C &#8211; cos A sin B sin C. 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Proof :&nbsp; We have, cos (A + B + C) = cos ((A + B) + C) &hellip; What is the Formula of Cos (A + B + C) ? 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