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Write the value of tan(2tan^(-1)1/5) ....

Write the value of `tan(2tan^(-1)1/5)` .

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`tan[2tan^(-1)1/5]=tan(tan^(-1)frac{2xx 1/5}{1-1/25})`
`=tan(tan^(-1)(2/5 xx 25/24))`
`=5/12`
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