MCQ Practice Mathematics 📖 y =b এবং 3x-y+1=0 রেখাদ্বয়ের অন্তর্ভু্ক্ত সূক্ষ্মকোণের মান ক 30°খ 60°গ 90°ঘ 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 This question appeared in DU KA Unit Question Bank Mathematics 2018-19 Question 11 DU KA Unit Question Bank Mathematics 2018-19 Question 11