CBSE

MATHEMATICS · Single correct · CBSE · Mathematics · Inverse Trigonometric Functions · Inverse Trigonometric Functions

Problem

\cos(\tan^{-1}x) =

(a)

\sqrt{1+x^2}

(b)

\frac{1}{\sqrt{1+x^2}}

(c)

1+x^2

(d) None of these

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