{"id":10743,"date":"2025-07-15T13:34:51","date_gmt":"2025-07-15T13:34:51","guid":{"rendered":"https:\/\/functiontranslator.com\/atan2\/"},"modified":"2021-02-25T17:13:36","modified_gmt":"2021-02-25T17:13:36","slug":"atan2","status":"publish","type":"post","link":"https:\/\/functiontranslator.com\/pt-pt\/atan2\/","title":{"rendered":"ATAN2"},"content":{"rendered":"<p>A fun\u00e7\u00e3o ATAN2 \u00e9 de grande utilidade no Microsoft Excel e nas Google Planilhas para calcular o arco tangente de um par de coordenadas cartesianas (x, y). Ela retorna o \u00e2ngulo em radianos entre o eixo x positivo e o ponto especificado pelas coordenadas. Esta fun\u00e7\u00e3o \u00e9 particularmente valiosa em campos como matem\u00e1tica, f\u00edsica e engenharia, onde frequentemente se necessita converter coordenadas cartesianas para polares.<\/p>\n<h2>Sintaxe e Exemplos<\/h2>\n<p>A fun\u00e7\u00e3o ATAN2 apresenta sintaxes ligeiramente diferentes entre o Excel e as Google Planilhas:<\/p>\n<ul>\n<li><strong>Excel:<\/strong> ATAN2(x_num, y_num)<\/li>\n<li><strong>Google Planilhas:<\/strong> ATAN2(y_num, x_num)<\/li>\n<\/ul>\n<p>Observe que os argumentos s\u00e3o invertidos entre as duas plataformas.<\/p>\n<pre><code> Exemplo no Excel: =ATAN2(4, 3) \/\/ Retorna o \u00e2ngulo cuja tangente \u00e9 4\/3: Resultado: 0.9273 radianos Exemplo nas Google Planilhas: =ATAN2(3, 4) \/\/ Mesmo caso do Excel, mas com argumentos invertidos: Resultado: 0.9273 radianos <\/code><\/pre>\n<h2>Aplica\u00e7\u00f5es Pr\u00e1ticas<\/h2>\n<p>A fun\u00e7\u00e3o ATAN2 \u00e9 amplamente usada para diversos c\u00e1lculos cient\u00edficos e an\u00e1lises de engenharia.<\/p>\n<h2>Encontrando a Dire\u00e7\u00e3o entre Dois Pontos<\/h2>\n<p>Por exemplo, para calcular a dire\u00e7\u00e3o do ponto A (1, 2) at\u00e9 o ponto B (4, 6), podemos subtrair as coordenadas de A de B para obter as componentes x e y dessa dire\u00e7\u00e3o.<\/p>\n<pre><code> No Excel: delta x = 4 - 1 = 3 delta y = 6 - 2 = 4 =ATAN2(4, 3) Resultado: 0.9273 radianos (aproximadamente 53.13 graus) Nas Google Planilhas: delta x = 4 - 1 = 3 delta y = 6 - 2 = 4 =ATAN2(4, 3) Resultado: 0.9273 radianos (aproximadamente 53.13 graus) <\/code><\/pre>\n<h2>Calculando a Orienta\u00e7\u00e3o de um Ve\u00edculo<\/h2>\n<p>Considere um rob\u00f4 que se desloca em um plano e precisa ter sua orienta\u00e7\u00e3o determinada a partir do vetor velocidade (vx, vy). A fun\u00e7\u00e3o ATAN2 \u00e9 ideal para determinar essa orienta\u00e7\u00e3o relativa ao eixo x positivo.<\/p>\n<pre><code> No Excel: vx = 5 vy = 5 =ATAN2(5, 5) Resultado: 0.7854 radianos (45 graus) Nas Google Planilhas: vx = 5 vy = 5 =ATAN2(5, 5) Resultado: 0.7854 radianos (45 graus) <\/code><\/pre>\n<p>Como voc\u00ea pode observar, apesar das diferen\u00e7as na ordem dos argumentos, a fun\u00e7\u00e3o ATAN2 funciona de maneira similar nas duas plataformas, provendo uma an\u00e1lise robusta para determina\u00e7\u00e3o de dire\u00e7\u00f5es e orienta\u00e7\u00f5es em um plano.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Devolve o arco de tangente das coordenadas x e y<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[437],"tags":[],"class_list":["post-10743","post","type-post","status-publish","format-standard","hentry","category-matematica-e-trigonometria"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Fun\u00e7\u00e3o ATAN2 no Excel \u2013 como funciona, exemplos e sintaxe<\/title>\n<meta name=\"description\" content=\"Breve descri\u00e7\u00e3o da fun\u00e7\u00e3o ATAN2 do Excel. 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