1.

If x = 3/5 then the value of cot(2tan-1x + cot-1x) is(A) \(\frac{3}{5}\)(B) \(-\frac{3}{5}\)(C) \(-\frac{4}{5}\)(D) \(\frac{4}{5}\)

Answer»

Correct answer is (B) \(-\frac{3}{5}\)



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