If tan x + tan left( frac{pi }{3} + x right) | vedclass

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(C) We use the identity $	an(A+B) = \frac{	an A + 	an B}{1 - 	an A 	an B}$.Given expression: $	an x + 	an \left( \frac{\pi }{3} + x ight) + \

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$	an 3x = 1$

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(C) We use the identity $	an(A+B) = \frac{	an A + 	an B}{1 - 	an A 	an B}$.Given expression: $	an x + 	an \left( \frac{\pi }{3} + x ight) + 	an \left( \frac{2\pi }{3} + x ight) = 3$Expanding the terms:$= 	an x + \frac{	an x + \sqrt{3}}{1 - \sqrt{3} 	an x} + \frac{	an x - \sqrt{3}}{1 + \sqrt{3} 	an x}$$= 	an x + \frac{(	an x + \sqrt{3})(1 + \sqrt{3} 	an x) + (	an x - \sqrt{3})(1 - \sqrt{3} 	an x)}{(1 - \sqrt{3} 	an x)(1 + \sqrt{3} 	an x)}$$= 	an x + \frac{(	an x + \sqrt{3} 	an^2 x + \sqrt{3} + 3 	an x) + (	an x - \sqrt{3} 	an^2 x - \sqrt{3} + 3 	an x)}{1 - 3 	an^2 x}$$= 	an x + \frac{8 	an x}{1 - 3 	an^2 x} = \frac{	an x - 3 	an^3 x + 8 	an x}{1 - 3 	an^2 x} = \frac{9 	an x - 3 	an^3 x}{1 - 3 	an^2 x}$$= 3 \left( \frac{3 	an x - 	an^3 x}{1 - 3 	an^2 x} ight) = 3 	an 3x$Given $3 	an 3x = 3$,therefore $	an 3x = 1$.

If $\tan x + \tan \left( \frac{\pi }{3} + x \right) + \tan \left( \frac{2\pi }{3} + x \right) = 3,$ then

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