{"id":"site-2680/zad/2386","paper_id":"site-2680","number":"2386","points":null,"ptype":"open","subject":"matematyka","category":"zbiory","year":0,"month":null,"level":"podstawowa","text":"Zadanie z trygonometrii: Oblicz a-b, gdy a = sin^4a - cos^4a, b = 1 - 4 sin^2a cos^2a dla a = 60 stopni.","answer":null,"answer_text":null,"solution":null,"image":"img/site/2680/zad-2386.svg","solution_image":"img/site/2680/rozw-2386.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>Zadanie z trygonometrii: Oblicz a-b, gdy a = sin^4a - cos^4a, b = 1 - 4 sin^2a cos^2a dla a = 60 stopni.</p>","solutions":[{"source":"site","label":"matematykaszkolna.pl","kind":"image","image":"/img/site/2680/rozw-2386.svg"}]}