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If tan^(-1)(sqrt(1+x^(2))-1)/(x)=4 then ...

If `tan^(-1)(sqrt(1+x^(2))-1)/(x)=4` then x equals

A

tan 2

B

tan 4

C

tan 6

D

tan 8

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The correct Answer is:
D
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MODERN PUBLICATION-MOCK TEST PAPER -III-SELECT THE CORRECT ANSWER
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