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