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Select the correct option from the given alternatives: `2tan^-1(frac{1}{3})+tan^-1(frac{1}{7}) = ` A) `tan^-1(frac{4}{5})` B) `frac{pi}{2}` C) 1 D) `frac{pi}{4}`

A

`tan^-1(frac{4}{5})`

B

`frac{pi}{2}`

C

1

D

`frac{pi}{4}`

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CHETANA PUBLICATION-Trignometric Functions-EXERCISE
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