{"kind":"task","effective_mode":"full","benchmark":{"kind":"benchmark","effective_mode":"full","slug":"math","formal_name":"MATH","introduction":"MATH organises 12,500 high-school competition problems into seven subjects and five difficulty levels, each with a full worked solution. It underlies much of the later mathematics evaluation work; this catalogue imports the full test split: 5,000 problems across all seven subjects.","introduction_ja":"","introduction_en":"","category":"Category not supplied","task_count":null,"acquisition_status":"Acquisition status not supplied","official_url":"https://github.com/hendrycks/math","indexing_mode":"index","profile":{"resources":[],"task_format":"","scoring":"","metric":"","size":"","answer_access":"","license":"","citation":"","maintainer":"","released":"","why_hard":"","related":[],"history":"","construction":"","limitations":"","saturation":"","scores":[]}},"task_id":"592959f0-5b07-50de-aaec-ddbd668fac74","task_key":"precalculus--test--592959f0-5b07-50de-aaec-ddbd668fac74","task_revision_id":"1","upstream_id":"","short_description":"In triangle $ABC,$ $\\angle A,$ $\\angle B,$ and $\\angle C$ form an arithmetic…","config":"precalculus","split":"test","body":"{\"level\":\"Level 5\",\"problem\":\"In triangle $ABC,$ $\\\\angle A,$ $\\\\angle B,$ and $\\\\angle C$ form an arithmetic sequence.  The length of the altitude from $B$ to $\\\\overline{AC}$ is equal to $AB - BC.$  Find all possible values of\\n\\\\[\\\\sin \\\\frac{C - A}{2}.\\\\]Enter all possible values, separated by commas.\",\"type\":\"Precalculus\"}","display_format":"math","language":"","answer_status":"published","assets":[],"source_url":"https://github.com/hendrycks/math","history":"initial import","indexing_mode":"index","subproblems":[],"grids":[]}