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Solve tanx + tan2x + tan3x = 0

Answer» We know that x+2x=3x.Therefore,tan 3x =tan( 2x+x)Appling formula tan( x+y) we get answer
We know that x+.2 x. =3xTherefore,tan(2x+3x)=3xAppling. On formula tan (x+y) we get answer..


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