1.

12, then show thatIf tan +tan e= 2.1tan20 +tan20​

Answer»

ong>Answer:

Step-by-step explanation:

Given TAN20  

TAN40  

=tan2(20  

)=  

1−TAN  

2

20  

 

2tan20  

 

​  

=  

1−λ  

2

 

​  

 

LHS=  

1+tan160  

tan110  

 

tan160  

−tan110  

 

​  

=tan(160  

−110  

)=tan50  

=tan(90  

−40  

)=cot40  

=  

tan40  

 

1

​  

=  

1−λ  

2

 

​  

=RHS



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