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Trigonometry word problems (part 2) http://www.khanacademy.org/video/trigonometry-word-problems--part-2 --------------------------- يتناول هذا الفيديو تكملة حل مسألة حول حساب المثلثات --------------------------- شكر خاص لمؤسسة شركاء في التنمية المستدامة -- فلسطين http://psdpal.org