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
Correct Answer

A. (-1)

Step 1

Concept

Since \(\cos0=1\), \(-\cos0=-1\). The negative sign reflects the graph in the (x)-axis.

Step 2

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.

Step 3

Exam Tip

\(\cos0=1\), इसलिए \(-\cos0=-1\)। ऋण चिह्न ग्राफ को (x)-अक्ष में परावर्तित करता है।

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Mathematics Answer, Explanation and Revision Hints

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 \(y=-\cos x\)?

Correct Answer: A. (-1). Explanation: \(\cos0=1\), इसलिए \(-\cos0=-1\)। ऋण चिह्न ग्राफ को (x)-अक्ष में परावर्तित करता है। / Since \(\cos0=1\), \(-\cos0=-1\). The negative sign reflects the graph in the (x)-axis.

Which concept should I revise for this Mathematics MCQ?

Since \(\cos0=1\), \(-\cos0=-1\). The negative sign reflects the graph in the (x)-axis.

What exam hint can help solve this Mathematics question?

\(\cos0=1\), इसलिए \(-\cos0=-1\)। ऋण चिह्न ग्राफ को (x)-अक्ष में परावर्तित करता है।