ग्राफ \(y=-\cos x\) में (x=0) पर (y) का मान क्या है?
What is the value of (y) at (x=0) for the graph \(y=-\cos x\)?
Explanation opens after your attempt
A. (-1)
Concept
Since \(\cos0=1\), \(-\cos0=-1\). The negative sign reflects the graph in the (x)-axis.
Why this answer is correct
The correct answer is A. (-1). Since \(\cos0=1\), \(-\cos0=-1\). The negative sign reflects the graph in the (x)-axis.
Exam Tip
\(\cos0=1\), इसलिए \(-\cos0=-1\)। ऋण चिह्न ग्राफ को (x)-अक्ष में परावर्तित करता है।
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