Maths 2 cos& # 178 ; 60° + 3 sin& # 178 ; 45° - 3 sin& # 178 ; 30° + 2 cos& # 178 ; 90° = ?

2 cos² 60° + 3 sin² 45° - 3 sin² 30° + 2 cos² 90° = ? - - 2 cos& # 178 ; 60° + 3 sin& # 178 ; 45° - 3 sin& # 178 ; 30° + 2 cos& # 178 ; 90° = ?  Maths in hindi,  trigonometry  1 Sahi 1/2 question answers in hindi pdf   1 Sahi 1/4 questions in hindi, Know About 1 Sahi 3/4 Maths online test Maths notes in hindi quiz book     2 Sahi 1/4