// Numbas version: exam_results_page_options
{"name": "identify the compass bearing", "extensions": ["geogebra"], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"name": "identify the compass bearing", "tags": [], "metadata": {"description": "<p>Student is shown a random bearing with the true bearing marked. They are asked to write it as a compass bearing.</p>", "licence": "Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International"}, "statement": "<p>{geogebra_applet('https://www.geogebra.org/m/bc4zzurx',defs)}</p>", "advice": "<p>The bearing is between {NS} and {EW}, so the bearing is of the form {NS}__{EW}.</p>\n<p>We need to compute the angle between {NS} and the bearing line.</p>\n<p>This is given by {calc_advice}.</p>\n<p>so the compass bearing is {angle_compass}.</p>", "rulesets": {}, "extensions": ["geogebra"], "builtin_constants": {"e": true, "pi,\u03c0": true, "i": true}, "constants": [], "variables": {"defs": {"name": "defs", "group": "geogebra vars", "definition": "[\n  ['bearing_1',angle]\n  ]", "description": "", "templateType": "anything", "can_override": false}, "angle": {"name": "angle", "group": "geogebra vars", "definition": "random(0..359)", "description": "", "templateType": "anything", "can_override": false}, "angle_compass": {"name": "angle_compass", "group": "display vars", "definition": "switch(angle=0,\"N\",\n  0<angle and angle<90,\"N\"+string(angle)+\"\u00b0E\",\n  angle=90,\"E\",\n  90<angle and angle<180,\"S\"+string(180-angle)+\"\u00b0E\",\n  angle=180,\"S\",\n  180<angle and angle<270,\"S\"+string(angle-180)+\"\u00b0W\",\n  angle=270,\"W\",\n  270<angle and angle<360,\"N\"+string(360-angle)+\"\u00b0W\",\"\")", "description": "", "templateType": "anything", "can_override": false}, "angle_compass_2": {"name": "angle_compass_2", "group": "display vars", "definition": "split(angle_compass,\"\u00b0\")[0]+split(angle_compass,\"\u00b0\")[1]", "description": "", "templateType": "anything", "can_override": false}, "NS": {"name": "NS", "group": "Advice calcs", "definition": "switch(angle<90 or angle > 270,'N',\n  angle >90 and angle < 270, 'S',\n  angle = 90 or angle = 270, '')", "description": "", "templateType": "anything", "can_override": false}, "EW": {"name": "EW", "group": "Advice calcs", "definition": "switch(angle = 0, '',\n  angle >0 and angle<180,'E',\n  angle = 180,'',\n  angle > 180, 'W')", "description": "", "templateType": "anything", "can_override": false}, "bearing": {"name": "bearing", "group": "Advice calcs", "definition": "switch(angle=0,'',\n  angle>0 and angle<90,string(angle),\n  angle=90,'',\n  angle>90 and angle<180, string(180-angle),\n  angle=180,'',\n  angle>180 and angle<270,string(180+angle),\n  angle=270,'',\n  angle>270, string(360-angle))", "description": "", "templateType": "anything", "can_override": false}, "calc_advice": {"name": "calc_advice", "group": "Advice calcs", "definition": "switch(angle=0,'due north',\n  angle>0 and angle<90,angle+\"\u00b0\",\n  angle=90,'due east',\n  angle>90 and angle<180, \"180\u00b0-\"+angle+\"\u00b0 = \" + (180-angle) + \"\u00b0\",\n  angle=180,'due south',\n  angle>180 and angle<270,angle+\"\u00b0 - 180\u00b0 = \"+ (angle-180) + \"\u00b0\",\n  angle=270,'due west',\n  angle>270, \"360\u00b0 -\"+ angle + \"\u00b0 = \" + (360-angle) + \"\u00b0\")", "description": "", "templateType": "anything", "can_override": false}}, "variablesTest": {"condition": "", "maxRuns": 100}, "ungrouped_variables": [], "variable_groups": [{"name": "geogebra vars", "variables": ["angle", "defs"]}, {"name": "display vars", "variables": ["angle_compass", "angle_compass_2"]}, {"name": "Advice calcs", "variables": ["calc_advice", "NS", "EW", "bearing"]}], "functions": {}, "preamble": {"js": "", "css": ""}, "parts": [{"type": "patternmatch", "useCustomName": false, "customName": "", "marks": 1, "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": true, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "<p>Give this bearing as a&nbsp;compass bearing.</p>\n<p>You can copy the \" &deg; \" sign from here and paste it, or you can just leave it out.</p>", "answer": "{angle_compass}|{angle_compass_2}", "displayAnswer": "{angle_compass}", "matchMode": "regex"}], "partsMode": "all", "maxMarks": 0, "objectives": [], "penalties": [], "objectiveVisibility": "always", "penaltyVisibility": "always", "contributors": [{"name": "Merryn Horrocks", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/4052/"}]}]}], "contributors": [{"name": "Merryn Horrocks", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/4052/"}]}