A value of x satisfying the equation sin[cot−1 (1+ x)] = cos [tan−1 x], is :

Question

A value of x satisfying the equation sin[cot⁻¹ (1+ x)] = cos [tan⁻¹x], is :

$ - {1 \over 2}$

$-$ 1

$ {1 \over 2}$

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