{"id":1891,"date":"2025-01-24T14:59:35","date_gmt":"2025-01-24T14:59:35","guid":{"rendered":"https:\/\/donhit.com\/en\/?p=1891"},"modified":"2025-02-07T08:37:07","modified_gmt":"2025-02-07T08:37:07","slug":"coterminal-angle","status":"publish","type":"post","link":"https:\/\/donhit.com\/en\/calculator\/coterminal-angle\/","title":{"rendered":"Coterminal Angle Calculator"},"content":{"rendered":"<p><center><div class=\"container123\">\r\n        <h2>Coterminal Angle Calculator<\/h2>\r\n        \r\n        <div class=\"unit-selector\">\r\n            <button class=\"unit-btn active\" data-unit=\"degrees\">Degrees<\/button>\r\n            <button class=\"unit-btn\" data-unit=\"radians\">Radians<\/button>\r\n        <\/div>\r\n\r\n        <div class=\"input-group\">\r\n            <label for=\"angle\">Enter Angle \r\n                <span class=\"tooltip\">\u2139\r\n                    <span class=\"tooltiptext\">Enter any angle value. The calculator will find its coterminal angles.<\/span>\r\n                <\/span>\r\n            <\/label>\r\n            <input type=\"number\" id=\"angle\" placeholder=\"Enter angle value\" step=\"any\">\r\n            <div class=\"error\" id=\"error-message\">Please enter a valid number<\/div>\r\n        <\/div>\r\n\r\n        <button class=\"calculate-btn\" onclick=\"calculateCoterminal()\">Calculate<\/button>\r\n\r\n        <div class=\"result\" id=\"result\">\r\n            <h2>Results<\/h2>\r\n            <p id=\"result-text\"><\/p>\r\n        <\/div>\r\n    <\/div>\r\n\r\n    <script>\r\n        let currentUnit = 'degrees';\r\n        const unitBtns = document.querySelectorAll('.unit-btn');\r\n        const resultDiv = document.getElementById('result');\r\n        const errorMessage = document.getElementById('error-message');\r\n\r\n        unitBtns.forEach(btn => {\r\n            btn.addEventListener('click', () => {\r\n                unitBtns.forEach(b => b.classList.remove('active'));\r\n                btn.classList.add('active');\r\n                currentUnit = btn.dataset.unit;\r\n                resultDiv.classList.remove('show');\r\n            });\r\n        });\r\n\r\n        function calculateCoterminal() {\r\n            const angleInput = document.getElementById('angle');\r\n            const angle = parseFloat(angleInput.value);\r\n\r\n            if (isNaN(angle)) {\r\n                errorMessage.style.display = 'block';\r\n                resultDiv.classList.remove('show');\r\n                return;\r\n            }\r\n\r\n            errorMessage.style.display = 'none';\r\n            let fullRotation, normalizedAngle, positiveAngle, negativeAngle;\r\n\r\n            if (currentUnit === 'degrees') {\r\n                fullRotation = 360;\r\n                normalizedAngle = ((angle % 360) + 360) % 360;\r\n                positiveAngle = normalizedAngle;\r\n                negativeAngle = normalizedAngle - 360;\r\n            } else {\r\n                fullRotation = 2 * Math.PI;\r\n                normalizedAngle = ((angle % (2 * Math.PI)) + 2 * Math.PI) % (2 * Math.PI);\r\n                positiveAngle = Number(normalizedAngle.toFixed(6));\r\n                negativeAngle = Number((normalizedAngle - 2 * Math.PI).toFixed(6));\r\n            }\r\n\r\n            const unit = currentUnit === 'degrees' ? '\u00b0' : ' rad';\r\n            const resultText = document.getElementById('result-text');\r\n            \r\n            resultText.innerHTML = `\r\n                <strong>Original angle:<\/strong> ${angle}${unit}<br>\r\n                <strong>Positive coterminal:<\/strong> ${positiveAngle}${unit}<br>\r\n                <strong>Negative coterminal:<\/strong> ${negativeAngle}${unit}<br><br>\r\n                <em>Note: These are the closest coterminal angles. Add\/subtract ${fullRotation}${unit} for more coterminal angles.<\/em>\r\n            `;\r\n\r\n            resultDiv.classList.add('show');\r\n        }\r\n\r\n        \/\/ Allow Enter key to trigger calculation\r\n        document.getElementById('angle').addEventListener('keypress', function(e) {\r\n            if (e.key === 'Enter') {\r\n                calculateCoterminal();\r\n            }\r\n        });\r\n    <\/script><\/center>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[184],"tags":[],"class_list":["post-1891","post","type-post","status-publish","format-standard","hentry","category-calculator"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Coterminal Angle Calculator - DonHit<\/title>\n<meta name=\"description\" content=\"A coterminal angle calculator offers significant advantages by automating complex calculations, saving users time while ensuring precision.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/donhit.com\/en\/calculator\/coterminal-angle\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Coterminal Angle Calculator - DonHit\" \/>\n<meta property=\"og:description\" content=\"A coterminal angle calculator offers significant advantages by automating complex calculations, saving users time while ensuring precision.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/donhit.com\/en\/calculator\/coterminal-angle\/\" \/>\n<meta property=\"og:site_name\" content=\"DonHit - World of Tools\" \/>\n<meta property=\"article:published_time\" content=\"2025-01-24T14:59:35+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-02-07T08:37:07+00:00\" \/>\n<meta name=\"author\" content=\"DonHit\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"DonHit\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Coterminal Angle Calculator - DonHit","description":"A coterminal angle calculator offers significant advantages by automating complex calculations, saving users time while ensuring precision.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/donhit.com\/en\/calculator\/coterminal-angle\/","og_locale":"en_US","og_type":"article","og_title":"Coterminal Angle Calculator - 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