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The set of vlues of x for which `tan^(-1)(x)/sqrt(1-x^(2))=sin^(-1)` x holds isA. RB. `(-1,1)`C. `(0,1)`D. `[-1,0]` |
Answer» We observe that RHS is defined forall `x in [-1,1]` whereas LHS is meaningfull for -`1ltxlt1` Also for `x in (-1,1)` we have `tan^(-1)(x)/sqrt(1-x^(2))` `theta=sin^(-1)x` |
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