(3 cos² 60° + 2 cot² 30° - 5 sin² 45°) का मान है? - - (3 cos& # 178 ; 60° + 2 cot& # 178 ; 30° - 5 sin& # 178 ; 45°) Ka Maan Hai ? Maths in hindi, trigonometry 17/4 question answers in hindi pdf 4 questions in hindi, Know About 13/6 Maths online test Maths notes in hindi quiz book 1