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Solve the equations.tan^(-1)(1-x)/(1+x)=...

Solve the equations.`tan^(-1)(1-x)/(1+x)=1/2tan^(-1)x ,(x >0)`

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`tan^(-1)""(1-x)/(1+x)=(1)/(2)tan^(-1)x, (x gt0)`
`tan^(-1)1-tan^(-1)x=(1)/(2)tan^(-1)x`
`implies (pi)/(4)=(1)/(2)tan^(-1)x+tan^(-1)x`
`implies(3)/(2)tan^(-1)x=(pi)/(4)`
`impliestan^(-1)x=(pi)/(4)`
`implies tan^(-1)=(pi)/(6)`
`implies x=tan""(pi)/(6)=(1)/(sqrt(3))`
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