Mathematics Answer, Explanation and Revision Hints
(\cos\(\pi+x\)) किसके बराबर है? / What is (\cos\(\pi+x\)) equal to?
Correct Answer: B. \(-\cos x\). Explanation: \(\pi+x\) तीसरे चतुर्थांश में है और वहाँ \(\cos x\) ऋणात्मक होता है। इसलिए (\cos\(\pi+x\)=-\cos x)। / \(\pi+x\) is in the third quadrant and \(\cos x\) is negative there. Therefore, (\cos\(\pi+x\)=-\cos x).
Which concept should I revise for this Mathematics MCQ?
\(\pi+x\) is in the third quadrant and \(\cos x\) is negative there. Therefore, (\cos\(\pi+x\)=-\cos x).
What exam hint can help solve this Mathematics question?
\(\pi+x\) तीसरे चतुर्थांश में है और वहाँ \(\cos x\) ऋणात्मक होता है। इसलिए (\cos\(\pi+x\)=-\cos x)।
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