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If the value of the expression `tan((1)/(2)cos^(-1).(2)/(sqrt5))` is in the form of `a+sqrtb` where `a, b in Z`, then the value of `(a+b)/(b)` is

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NTA MOCK TESTS-NTA JEE MOCK TEST 34-MATHEMATICS
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  17. If the value of the expression tan((1)/(2)cos^(-1).(2)/(sqrt5)) is in ...

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