MCQ Practice Mathematics 📖 ABC ত্রিভুজের BC বাহুকে D পর্যন্ত বর্ধিত করা হল। ∠ACD = 160°; ∠ABC = 7∠BAC হলে ∠BAC -এর মান কত? A 20° B 40° C 60° D 70° Favorite Practice Add to Book Explanation & Answer Detailed explanations and answers are restricted. Unlock full access by logging in to your account. 🔒 Unlock the detailed explanation and answers Log In / Sign Up