3cosA is equal to A 4cos3A\+\3cosA B 4cos3A\-\3cosA C 3cos3A\+\3cosA D 3cos3A\-\3cosA 3cosA is equal to Correct Answer 4cos3A\-\3cosA মোঃ আরিফুল ইসলাম Feb 20, 2025 Simplification Quantitative Aptitude Arithmetic Ability Bank Exams