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The solution of (dy)/(dx)+sqrt((1-y^2)/(...

The solution of `(dy)/(dx)+sqrt((1-y^2)/(1-x^2))=0` is (A) `tan^-1 x+cot^1-x=c` (B) `sin^-1x+sin^-1y+c ` (C) `sec^-1 x+cosec^-1 x=c ` (D) none of these

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