{"id":"site-2654/zad/3138","paper_id":"site-2654","number":"3138","points":null,"ptype":"open","subject":"matematyka","category":"zbiory","year":0,"month":null,"level":"podstawowa","text":"Kąt alfa jest ostry i sin alfa = 1/4. Wówczas A. cos alfa < 3/4, B. cos alfa = 3/4, C. cos alfa = pierwiastek z 13 / 4, D. cos alfa > pierwiastek z 13 / 14","answer":null,"answer_text":null,"solution":null,"image":"img/site/2654/zad-3138.svg","solution_image":"img/site/2654/rozw-3138.svg","topics":null,"page_from":null,"source":"site","answer_source":null,"answer_text_source":null,"solution_source":null,"text_source":"site","source_label":"Matematyka · Zbiory zadań (podstawowa)","subject_label":"Matematyka","category_label":"Zbiory zadań","text_html":"<p>Kąt alfa jest ostry i sin alfa = 1/4. Wówczas A. cos alfa &lt; 3/4, B. cos alfa = 3/4, C. cos alfa = pierwiastek z 13 / 4, D. cos alfa &gt; pierwiastek z 13 / 14</p>","solutions":[{"source":"site","label":"matematykaszkolna.pl","kind":"image","image":"/img/site/2654/rozw-3138.svg"}]}