Mathematics Answer, Explanation and Revision Hints
कौन सा व्यंजक परिभाषित है? / Which expression is defined?
Correct Answer: A. (\cos^{-1}(-1)). Explanation: \(-1\in[-1,1]\) इसलिए (\cos^{-1}(-1)) परिभाषित है। अन्य विकल्प अपने डोमेन से बाहर हैं। / Since \(-1\in[-1,1]\), (\cos^{-1}(-1)) is defined. The other options are outside their domains.
Which concept should I revise for this Mathematics MCQ?
Since \(-1\in[-1,1]\), (\cos^{-1}(-1)) is defined. The other options are outside their domains.
What exam hint can help solve this Mathematics question?
\(-1\in[-1,1]\) इसलिए (\cos^{-1}(-1)) परिभाषित है। अन्य विकल्प अपने डोमेन से बाहर हैं।
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