{"id":217859,"date":"2023-12-23T01:27:25","date_gmt":"2023-12-22T17:27:25","guid":{"rendered":"https:\/\/www.idc.net\/help\/217859\/"},"modified":"2023-12-23T01:27:25","modified_gmt":"2023-12-22T17:27:25","slug":"php%e5%87%bd%e6%95%b0%ef%bc%9asin","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/217859\/","title":{"rendered":"PHP\u51fd\u6570\uff1asin"},"content":{"rendered":"<p><title id=\"php%e5%87%bd%e6%95%b0%ef%bc%9asin-hvmDNgLoil\">PHP\u51fd\u6570\uff1asin<\/title><\/p>\n<h1 id=\"php%e5%87%bd%e6%95%b0%ef%bc%9asin-hvmDNgLoil\">PHP\u51fd\u6570\uff1asin<\/h1>\n<p>\u5728PHP\u4e2d\uff0csin()\u51fd\u6570\u662f\u4e00\u4e2a\u7528\u4e8e\u8ba1\u7b97\u6b63\u5f26\u503c\u7684\u6570\u5b66\u51fd\u6570\u3002\u5b83\u63a5\u53d7\u4e00\u4e2a\u53c2\u6570\uff0c\u5373\u89d2\u5ea6\uff08\u4ee5\u5f27\u5ea6\u4e3a\u5355\u4f4d\uff09\uff0c\u5e76\u8fd4\u56de\u8be5\u89d2\u5ea6\u7684\u6b63\u5f26\u503c\u3002<\/p>\n<h2 id=\"%e8%af%ad%e6%b3%95-hvmDNgLoil\">\u8bed\u6cd5<\/h2>\n<p>sin(angle)<\/p>\n<h2 id=\"%e5%8f%82%e6%95%b0-hvmDNgLoil\">\u53c2\u6570<\/h2>\n<p>angle\uff1a\u5fc5\u9700\uff0c\u6307\u5b9a\u8981\u8ba1\u7b97\u6b63\u5f26\u503c\u7684\u89d2\u5ea6\uff0c\u4ee5\u5f27\u5ea6\u4e3a\u5355\u4f4d\u3002<\/p>\n<h2 id=\"%e8%bf%94%e5%9b%9e%e5%80%bc-hvmDNgLoil\">\u8fd4\u56de\u503c<\/h2>\n<p>sin()\u51fd\u6570\u8fd4\u56de\u6307\u5b9a\u89d2\u5ea6\u7684\u6b63\u5f26\u503c\uff0c\u8303\u56f4\u5728-1\u52301\u4e4b\u95f4\u3002<\/p>\n<h2 id=\"%e7%a4%ba%e4%be%8b-hvmDNgLoil\">\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4f7f\u7528sin()\u51fd\u6570\u8ba1\u7b97\u6b63\u5f26\u503c\u7684\u51e0\u4e2a\u793a\u4f8b\uff1a<\/p>\n<pre>\n&lt;?php\n$angle = 45; \/\/ \u89d2\u5ea6\u4e3a45\u5ea6\n$rad = deg2rad($angle); \/\/ \u5c06\u89d2\u5ea6\u8f6c\u6362\u4e3a\u5f27\u5ea6\n$result = sin($rad); \/\/ \u8ba1\u7b97\u6b63\u5f26\u503c\necho \"\u89d2\u5ea6\u4e3a45\u5ea6\u7684\u6b63\u5f26\u503c\u4e3a\uff1a\" . $result;\n?&gt;\n<\/pre>\n<p>\u8f93\u51fa\uff1a<\/p>\n<p>\u89d2\u5ea6\u4e3a45\u5ea6\u7684\u6b63\u5f26\u503c\u4e3a\uff1a0.70710678118655<\/p>\n<p>\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u5c06\u89d2\u5ea6\u8f6c\u6362\u4e3a\u5f27\u5ea6\uff0c\u7136\u540e\u4f7f\u7528sin()\u51fd\u6570\u8ba1\u7b97\u6b63\u5f26\u503c\uff0c\u5e76\u5c06\u7ed3\u679c\u6253\u5370\u51fa\u6765\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a1%b9-hvmDNgLoil\">\u6ce8\u610f\u4e8b\u9879<\/h2>\n<p>\u5728\u4f7f\u7528sin()\u51fd\u6570\u65f6\uff0c\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u51e0\u70b9\uff1a<\/p>\n<ul>\n<li>\u89d2\u5ea6\u53c2\u6570\u5fc5\u987b\u4ee5\u5f27\u5ea6\u4e3a\u5355\u4f4d\u3002\u5982\u679c\u89d2\u5ea6\u662f\u4ee5\u5ea6\u4e3a\u5355\u4f4d\u7684\uff0c\u53ef\u4ee5\u4f7f\u7528deg2rad()\u51fd\u6570\u5c06\u5176\u8f6c\u6362\u4e3a\u5f27\u5ea6\u3002<\/li>\n<li>sin()\u51fd\u6570\u8fd4\u56de\u7684\u662f\u4e00\u4e2a\u6d6e\u70b9\u6570\u3002<\/li>\n<li>\u5982\u679c\u4f20\u5165\u7684\u53c2\u6570\u4e0d\u662f\u6570\u5b57\u7c7b\u578b\uff0csin()\u51fd\u6570\u5c06\u8fd4\u56deNaN\uff08Not a Number\uff09\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%bb%93%e8%ae%ba-hvmDNgLoil\">\u7ed3\u8bba<\/h2>\n<p>\u901a\u8fc7\u4f7f\u7528PHP\u7684sin()\u51fd\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u65b9\u4fbf\u5730\u8ba1\u7b97\u7ed9\u5b9a\u89d2\u5ea6\u7684\u6b63\u5f26\u503c\u3002\u8fd9\u5bf9\u4e8e\u9700\u8981\u8fdb\u884c\u4e09\u89d2\u51fd\u6570\u8ba1\u7b97\u7684\u6570\u5b66\u548c\u79d1\u5b66\u5e94\u7528\u7a0b\u5e8f\u975e\u5e38\u6709\u7528\u3002<\/p>\n<h2 id=\"summary-section-hvmDNgLoil\">Summary Section<\/h2>\n<p>\u9999\u6e2f\u670d\u52a1\u5668\u9996\u9009\u540e\u6d6a\u4e91\uff0c\u63d0\u4f9b\u53ef\u9760\u7684\u4e91\u8ba1\u7b97\u670d\u52a1\u3002\u60a8\u53ef\u4ee5\u901a\u8fc7\u8bbf\u95ee<a href=\"https:\/\/idc.net\">https:\/\/idc.net<\/a>\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u9999\u6e2f\u670d\u52a1\u5668\u3001\u7f8e\u56fd\u670d\u52a1\u5668\u548c\u4e91\u670d\u52a1\u5668\u7684\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PHP\u51fd\u6570\uff1asin PHP\u51fd\u6570\uff1asin \u5728PHP\u4e2d\uff0csin()\u51fd\u6570\u662f\u4e00\u4e2a\u7528\u4e8e\u8ba1\u7b97\u6b63\u5f26\u503c\u7684\u6570\u5b66\u51fd\u6570\u3002\u5b83\u63a5\u53d7\u4e00\u4e2a\u53c2 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[197851],"tags":[],"class_list":["post-217859","post","type-post","status-publish","format-standard","hentry","category-php"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/217859","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/comments?post=217859"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/217859\/revisions"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=217859"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=217859"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=217859"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}