cos10cos30cos50cos70 = 3/16 | tan20tan40tan60tan80 = 3 | transformation formula | rd sharma ex 8.1 скачать в хорошем качестве

cos10cos30cos50cos70 = 3/16 | tan20tan40tan60tan80 = 3 | transformation formula | rd sharma ex 8.1

class 11 maths | transformation formula trigonometry class 11 | rd sharma exercise 8.1 | cos10cos30cos50cos70 = 3/16 tan20tan40tan60tan80 = 3 cos40cos80cos160 = -1/8 sin20sin40sin80 = √3/8 cos20cos40cos80 = 1/8 tan20tan30tan40tan80 = 1 sin10sin50sin60sin70 = √3/16 sin20sin40sin60sin80 = 3/16 2sinAsinB = cos(A-B) - cos(A+B) | 2cosAcosB = cos(A+B)+cos(A-B) | 2sinAcosB = sin(A+B) + sin(A-B) | 2cosAsinB = sin(A+B) - sin(A-B) | sin(A+B).sin(A-B) = sin²A - sin²B | 2cos(A+B).cos(A-B) = cos²A - sin²B | trigonometry class 11 | amit ranjan mathematics Class 11 maths playlist Trigonometry class 11    • trignometry class 11 | class 11 maths   Links of class 12 maths playlist Chapter 23 to Chapter 27 Algebra of vectors | dot product | cross product | scalar triple product | direction cosines and direction ratios    • algebra of vectors class 12 | scalar or do...   Chapter 22 DIFFERENTIAL EQUATIONS    • differential equations class 12   Chapter 9 and 10 Continuity and diffrentiability    • continuity and differentiability class 12   Chapter 4 INVERSE TRIGNOMETRIC FUNCTIONS    • inverse trigonometric functions class 12   Chapter 1 ,2 Relation And Function    • relation and function class 12   Chapter 28 Straight Line In Space    • Straight line in space class 12   Chapter 29 The Plane    • the plane class 12   Chapter 11 Differentiation    • differentiation class 12 Mathematics | rd ...   Chapter 19 Indefinite Integral    • …..   Chapter 20 Definite Integration    • definite integration class 12   Chapter 5,6,7 and 8 algebra of matrices , determinant , adjoint and inverse of matrix and simultaneous linear equation    • Matrix for class 12th   Chapter 14 to chapter 18 Application Of Derivative    • Application Of Derivatives For Class 12 - ...   Chapter 30 to chapter 32 probability , random variables and binomial distribution    • Probability for class 12   Committed To Provide Complete Course And For Your Better Grades In Board Exams Please Join The Channel And Share The Videos With Friends #amitranjanmathematics #class11maths #class12maths #youtube #lectures