{"id":8212,"date":"2024-04-15T02:56:46","date_gmt":"2024-04-15T02:56:46","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=8212"},"modified":"2024-04-15T02:56:46","modified_gmt":"2024-04-15T02:56:46","slug":"for-a-line-ab-a-the-forebearing-of-ab-and-back-bearing-of-ab-differ-by-180a-b-the-forebearing-of-ab-and-back-bearing-of-ba-differ-by-180a-c-both-a-and-b-are-correct-d-none-is-corre","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/for-a-line-ab-a-the-forebearing-of-ab-and-back-bearing-of-ab-differ-by-180a-b-the-forebearing-of-ab-and-back-bearing-of-ba-differ-by-180a-c-both-a-and-b-are-correct-d-none-is-corre\/","title":{"rendered":"For a line AB A. the forebearing of AB and back bearing of AB differ by 180\u00c2\u00b0 B. the forebearing of AB and back bearing of BA differ by 180\u00c2\u00b0 C. both (A) and (B) are correct D. none is correct"},"content":{"rendered":"<p>\r\n    <!-- Check if it's an AMP page -->\r\n            <!-- Non-AMP version -->\r\n        <div class=\"mcq-container\" data-quiz-id=\"quizState_6a9db9d0e1aa6\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"true\">\r\n                    the forebearing of AB and back bearing of AB differ by 180\u00c2\u00b0                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"false\">\r\n                    the forebearing of AB and back bearing of BA differ by 180\u00c2\u00b0                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"false\">\r\n                    both (A) and (B) are correct                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"false\">\r\n                    none is correct                <\/div>\r\n                            \r\n            <!-- Feedback messages for non-AMP -->\r\n            <div class=\"feedback\" data-feedback=\"wrong\">Answer is Right!<\/div>\r\n            <div class=\"feedback\" data-feedback=\"right\">Answer is Wrong!<\/div>\r\n        <\/div>\r\n\r\n        <script>\r\n        document.addEventListener('DOMContentLoaded', function () {\r\n            var containers = document.querySelectorAll('.mcq-container');\r\n\r\n            containers.forEach(function(container) {\r\n                var options = container.querySelectorAll('.option');\r\n                var feedbackSelect = container.querySelector('[data-feedback=\"select\"]');\r\n                var feedbackWrong = container.querySelector('[data-feedback=\"wrong\"]');\r\n                var feedbackRight = container.querySelector('[data-feedback=\"right\"]');\r\n\r\n                options.forEach(function(option) {\r\n                    option.addEventListener('click', function() {\r\n                        var selectedOption = option.getAttribute('data-option-key');\r\n                        var isCorrect = option.getAttribute('data-is-correct') === 'true';\r\n\r\n                        \/\/ Remove previous selections\r\n                        options.forEach(function(opt) {\r\n                            opt.classList.remove('correct', 'incorrect');\r\n                        });\r\n\r\n                        \/\/ Add the correct\/incorrect class\r\n                        if (isCorrect) {\r\n                            option.classList.add('correct');\r\n                            feedbackRight.hidden = false;\r\n                            feedbackWrong.hidden = true;\r\n                        } else {\r\n                            option.classList.add('incorrect');\r\n                            feedbackRight.hidden = true;\r\n                            feedbackWrong.hidden = false;\r\n                        }\r\n\r\n                        \/\/ Hide select feedback\r\n                        feedbackSelect.hidden = true;\r\n                    });\r\n                });\r\n            });\r\n        });\r\n        <\/script>\r\n    \r\n    <!--more--><\/p>\n<p>The correct answer is: A. the forebearing of AB and back bearing of AB differ by 180\u00c2\u00b0.<\/p>\n<p>The forebearing of a line is the angle between the north direction and the line, measured clockwise from north. The back bearing of a line is the angle between the south direction and the line, measured clockwise from south.<\/p>\n<p>For a line AB, the forebearing of AB is the angle between the north direction and line AB, measured clockwise from north. The back bearing of AB is the angle between the south direction and line AB, measured clockwise from south.<\/p>\n<p>Since the north direction is 0\u00c2\u00b0 and the south direction is 180\u00c2\u00b0, the forebearing of AB and the back bearing of AB differ by 180\u00c2\u00b0.<\/p>\n<p>Option B is incorrect because the back bearing of BA is the angle between the south direction and line BA, measured clockwise from south. Since the south direction is 180\u00c2\u00b0 and the line BA is the same as the line AB, the back bearing of BA is 180\u00c2\u00b0. The forebearing of AB is the angle between the north direction and line AB, measured clockwise from north. Since the north direction is <div class=\"youtube-subscribe-container\">\r\n        <a href=\"https:\/\/www.youtube.com\/channel\/UCNHT8lW-JmLC68rjBfZhdkg?sub_confirmation=1\" target=\"_blank\" class=\"youtube-subscribe-button\">\r\n            <span class=\"youtube-icon\">\r\n    <div class=\"telegram-channel-container\">\r\n        <a href=\"https:\/\/t.me\/pscnotes2025\" target=\"_blank\" class=\"telegram-channel-button\">\r\n            <span class=\"telegram-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 496 512\">\r\n                    <path fill=\"white\" d=\"M248,8C111,8,0,119,0,256s111,248,248,248s248-111,248-248S385,8,248,8z M362,177L320,367c-3,14-10,18-20,14l-56-41l-27,26 c-3,3-5,5-10,5l4-63L323,196c5-5-1-7-8-3l-98,62l-42-13c-9-3-10-9,2-14l162-63C351,160,365,164,362,177z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Join Our Telegram Channel\r\n        <\/a>\r\n    <\/div>             <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 576 512\">\r\n                    <path d=\"M549.7 124.1c-6.3-23.7-24.8-42.3-48.3-48.6C458.8 64 288 64 288 64S117.2 64 74.6 75.5c-23.5 6.3-42 24.9-48.3 48.6-11.4 42.9-11.4 132.3-11.4 132.3s0 89.4 11.4 132.3c6.3 23.7 24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Subscribe on YouTube\r\n        <\/a>\r\n    <\/div> 0\u00c2\u00b0 and the line AB is the same as the line BA, the forebearing of BA is 0\u00c2\u00b0. Therefore, the forebearing of AB and the back bearing of BA do not differ by 180\u00c2\u00b0.<\/p>\n<p>Option C is incorrect because both (A) and (B) are not correct.<\/p>\n<p>Option D is incorrect because the forebearing of AB and the back bearing of AB differ by 180\u00c2\u00b0.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Subscribe on YouTube<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[654],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>For a line AB A. the forebearing of AB and back bearing of AB differ by 180\u00c2\u00b0 B. the forebearing of AB and back bearing of BA differ by 180\u00c2\u00b0 C. both (A) and (B) are correct D. none is correct<\/title>\n<meta name=\"robots\" content=\"index, follow, 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