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Trigonometry word problems (part 1) http://www.khanacademy.org/video/trigonometry-word-problems--part-1 ------------------------------- يتناول هذا الفيديو حل مسألة حول حساب المثلثات ------------------------------- شكر خاص لمؤسسة شركاء في التنمية المستدامة -- فلسطين http://psdpal.org