कौन सा व्यंजक परिभाषित है?
Explanation opens after your attempt
Correct Answer
A. (\cos^{-1}(-1))
Concept
Since \(-1\in[-1,1]\), (\cos^{-1}(-1)) is defined. The other options are outside their domains.
Why this answer is correct
The correct answer is A. (\cos^{-1}(-1)). Since \(-1\in[-1,1]\), (\cos^{-1}(-1)) is defined. The other options are outside their domains.
Exam Tip
\(-1\in[-1,1]\) इसलिए (\cos^{-1}(-1)) परिभाषित है। अन्य विकल्प अपने डोमेन से बाहर हैं।
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