Q.202455: (sec² 60° + 2 cot² 30° - 5 sin² 45°) এর মান কত? |
(sec² 60° + 2 cot² 30° - 5 sin² 45°) এর মান কত? - - Maths in Bengali, trigonometry question answers in Bengali pdf questions in Bengali, Know About Maths online test Maths notes in Bengali quiz book