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Find the value of `tan.[cos^(-1)(1/2)+tan^(-1)(-1/(sqrt(3)))]`

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Find the value of `tan.[cos^(-1)(1/2)+tan^(-1)(-1/(sqrt(3)))]`
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`tan[cos^(-1)(1/2)+tan^(-1)(-1/(sqrt(3)))]=tan[(pi)/3+(-(pi)/6)]=tan((pi)/6)=1/(sqrt(3))`
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