Trigonometry Identities - Easy Learning Techniques ( Notes )

Adarsh Academy S - Youtube ( Subscribe )

Trigonometry Identities - Easy Learning Techniques ( Notes )



Hey Everyone, I will Show you How to Learn Trigonometry Formulas Which is very Helpful For You for grow Your Concept For  Derivatives .

Formula Overview ;

1 ) Pythagoras Identities .
2 ) Sum & Difference Identities
3 ) Double Angle Identities 
4 ) Triple Angle Identities
5 ) Sum To Product Formula 
6 ) Product To Sum Formula 

This is all Most Important Identities Of Trigonometry

               Pythagoras Identities 

1 ) sin²θ + cos²θ = 1

2 ) 1 + tan² θ = Sec² θ

3 ) 1 + Cot ²θ = Cosec² θ

          Sum & Difference Identities

1 ) Sin ( A + B ) =  SinA CosB + CosA SinB

2 ) Sin ( A - B )  =  SinA CosB  - CosA SinB 

3 ) Cos ( A + B ) = CosA Cos B - SinA Sin B

4 ) Cos ( A + B ) = CosA Cos B + SinA Sin B

5 ) tan ( A + B ) =   tanA + tanB 
                                1 - tanA tanB 

6 ) tan ( A - B )  =      tanA - tanB  
                                  1 + tanA tanB 

7 ) Cot ( A + B ) =   CotA CotB - 1  
                                 Cot A + CotB

8 ) Cot ( A - B )  =   CotA CotB + 1  
                                 Cot B - Cot A

         Double Angle Identities 

1 ) Sin 2x = 2 Sin x Cos x 

2 ) Sin 2x = 2 tanx 
                   1+ tan²x

3 ) Cos 2x = Cos²x - Sin²x

4 ) Cos 2x = 1 - 2 Sin ²x

5 ) Cos 2x = 2 Cos²x - 1

6 ) Cos 2x =   1 - tan²x
                        1+ tan²x

7 ) tan 2x =    2 tan x  
                      1 - tan ²x

8 ) Cot 2x =  cot²x - 1 
                       2Cot x

         Triple Angle Identities 

1 ) Sin 3x  = 3 Sin x - 4 Sin³x

2 ) Cos 3x = 4 Cos³x - 3 Cos x

3 ) tan 3x = 3 tan x -tan³x 
                       1 - 3tan²x 

       Sum To Product Formula

1 ) SinA + SinB = 2sin (A + B )/2 Cos( A - B )/2

2 ) SinA - SinB = 2Cos (A + B )/2 Sin( A - B )/2

3 ) CosA + CosB = 2Cos(A + B )/2 Cos( A - B )/2

4 )CosA - CosB = - 2Sin (A + B )/2 Sin( A - B )/2

        Product To Sum Formula 

1 ) 2 CosA CosB = Cos (A + B ) + Cos ( A - B ) 

2 ) 2 SinA SinB  = Cos ( A - B ) - Cos ( A + B )

3 ) 2 SinA CosB = Sin ( A + B ) + Sin ( A - B ) 

4 ) 2 CosA SinB = Sin ( A + B ) - Sin ( A - B )


This is Complete formula Of Trigonometric .


Thank you For Visiting 


Comments

Post a Comment

Popular posts from this blog

Applied Mathematics - ll : Differentiation | Chapter 02 | Lecture 02 Notes For Polytechnic.

Rate Of Change Of Quantities | Ch 05 | Application Of Differentiation 02 Notes ; Polytechnic