JEE MATHEMATICS MCQ: INVERSE TRIGONOMETRY

1 Easy

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Application +4 | -1

\cos \left\{ {{{\cos }^{ - 1}}\left( { - \frac{1}{7}} \right) + {{\sin }^{ - 1}}\left( { - \frac{1}{7}} \right)} \right\}\; =

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Correct option: B

0

Option B (0) is correct because

{\cos ^{ - 1}}( - \frac{1}{7}) + {\sin ^{ - 1}}( - \frac{1}{7}) = \frac{\pi}{2}

, and

\cos(\frac{\pi}{2}) = 0

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