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Grade: 9 
        
 Solution of Tanx+tan (120+x ) + tan ( x-120)=0 is
1. npie/3
2.npie/6
3.npie/4
npie/2
9 months ago

Answers : (1)

Arun
20415 Points 
							
Dear student


 


on solving it is euqal to 


3 tan 3x


hence 3 tan 3x = 0


tan 3x = 0


3x = n* pi


x = npi/3




Regards


Arun
9 months ago
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