{"id":3175,"date":"2024-08-26T22:32:52","date_gmt":"2024-08-26T22:32:52","guid":{"rendered":"https:\/\/workhouse.sweetdishy.com\/?p=3175"},"modified":"2024-08-26T22:32:53","modified_gmt":"2024-08-26T22:32:53","slug":"the-polar-form-of-a-complex-number","status":"publish","type":"post","link":"https:\/\/workhouse.sweetdishy.com\/index.php\/2024\/08\/26\/the-polar-form-of-a-complex-number\/","title":{"rendered":"The Polar Form of a Complex Number"},"content":{"rendered":"\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/learning.oreilly.com\/api\/v2\/epubs\/urn:orm:book:9781856175289\/files\/images\/F00007Xgr3.jpg\" alt=\"image\"\/><\/figure>\n\n\n\n<p><strong>Figure 7.3<\/strong>&nbsp;Polar form of complex numbers<\/p>\n\n\n\n<p id=\"P0610\">This latter form is usually abbreviated to&nbsp;<em><strong>Z<\/strong><\/em>=<em><strong>r<\/strong><\/em>\u2220<strong>\u03b8<\/strong>, and is called the polar form of a complex number.<\/p>\n\n\n\n<p id=\"P0620\"><em>r<\/em>&nbsp;is called the&nbsp;<em>modulus<\/em>&nbsp;(or magnitude of&nbsp;<em>Z<\/em>) and is written as mod&nbsp;<em>Z<\/em>&nbsp;or |<em>Z<\/em>|.&nbsp;<em>r<\/em>&nbsp;is determined from Pythagoras\u2019s theorem on triangle OAZ:<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/learning.oreilly.com\/api\/v2\/epubs\/urn:orm:book:9781856175289\/files\/images\/F00007Xsi32.png\" alt=\"image\"\/><\/figure>\n\n\n\n<p id=\"P0630\">The modulus is represented on the Argand diagram by the distance OZ. \u03b8 is called the argument (or amplitude) of&nbsp;<em>Z<\/em>&nbsp;and is written as arg&nbsp;<em>Z<\/em>. \u03b8 is also deduced from triangle OA<em>Z<\/em>: arg&nbsp;<em>Z<\/em>=\u03b8=tan<sup>-1<\/sup><em>y<\/em>\/<em>x<\/em>.<\/p>\n\n\n\n<p id=\"P0640\">For example, the cartesian complex number (3+<em><strong>j<\/strong><\/em>4) is equal to&nbsp;<em>r<\/em>\u2220\u03b8 in polar form, where&nbsp;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/learning.oreilly.com\/api\/v2\/epubs\/urn:orm:book:9781856175289\/files\/images\/F00007Xsi33.png\" alt=\"image\" width=\"127\" height=\"27\">&nbsp;and,<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/learning.oreilly.com\/api\/v2\/epubs\/urn:orm:book:9781856175289\/files\/images\/F00007Xsi34.png\" alt=\"image\"\/><\/figure>\n\n\n\n<p id=\"P0650\">Hence,&nbsp;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/learning.oreilly.com\/api\/v2\/epubs\/urn:orm:book:9781856175289\/files\/images\/F00007Xsi35.png\" alt=\"image\" width=\"131\" height=\"21\"><\/p>\n\n\n\n<p id=\"P0660\">Similarly, (\u20133+<em>j<\/em>4) is shown in\u00a0Figure 7.3(b),<\/p>\n\n\n\n<p id=\"P0670\">where,&nbsp;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/learning.oreilly.com\/api\/v2\/epubs\/urn:orm:book:9781856175289\/files\/images\/F00007Xsi36.png\" alt=\"image\" width=\"283\" height=\"39\"><\/p>\n\n\n\n<p id=\"P0680\">and,&nbsp;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/learning.oreilly.com\/api\/v2\/epubs\/urn:orm:book:9781856175289\/files\/images\/F00007Xsi37.png\" alt=\"image\" width=\"173\" height=\"19\"><\/p>\n\n\n\n<p id=\"P0690\">Hence, (\u2013<strong>3<\/strong>+<em><strong>j<\/strong><\/em><strong>4<\/strong>)=<strong>5\u2220126.87<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Figure 7.3&nbsp;Polar form of complex numbers This latter form is usually abbreviated to&nbsp;Z=r\u2220\u03b8, and is called the polar form of a complex number. r&nbsp;is called the&nbsp;modulus&nbsp;(or magnitude of&nbsp;Z) and is written as mod&nbsp;Z&nbsp;or |Z|.&nbsp;r&nbsp;is determined from Pythagoras\u2019s theorem on triangle OAZ: The modulus is represented on the Argand diagram by the distance OZ. \u03b8 is [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3168,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[428],"tags":[],"class_list":["post-3175","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-complex-numbers"],"jetpack_featured_media_url":"https:\/\/workhouse.sweetdishy.com\/wp-content\/uploads\/2024\/08\/mathematics.png","_links":{"self":[{"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/posts\/3175","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/comments?post=3175"}],"version-history":[{"count":1,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/posts\/3175\/revisions"}],"predecessor-version":[{"id":3176,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/posts\/3175\/revisions\/3176"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/media\/3168"}],"wp:attachment":[{"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/media?parent=3175"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/categories?post=3175"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/tags?post=3175"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}