(\cos^{-1}(-x)) किसके बराबर है जब \(x\in[-1,1]\)?

What is (\cos^{-1}(-x)) equal to when \(x\in[-1,1]\)?

Author: Muft Shiksha Editorial Team Published:
Explanation opens after your attempt
Correct Answer

A. \(\pi-\cos^{-1}x\)

Step 1

Concept

The identity is (\cos^{-1}(-x)=\pi-\cos^{-1}x). Do not solve it by treating \(\cos^{-1}x\) as an odd function.

Step 2

Why this answer is correct

The correct answer is A. \(\pi-\cos^{-1}x\). The identity is (\cos^{-1}(-x)=\pi-\cos^{-1}x). Do not solve it by treating \(\cos^{-1}x\) as an odd function.

Step 3

Exam Tip

पहचान (\cos^{-1}(-x)=\pi-\cos^{-1}x) होती है। इसे \(\cos^{-1}x\) को विषम फलन मानकर हल न करें।

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Mathematics Answer, Explanation and Revision Hints

(\cos^{-1}(-x)) किसके बराबर है जब \(x\in[-1,1]\)? / What is (\cos^{-1}(-x)) equal to when \(x\in[-1,1]\)?

Correct Answer: A. \(\pi-\cos^{-1}x\). Explanation: पहचान (\cos^{-1}(-x)=\pi-\cos^{-1}x) होती है। इसे \(\cos^{-1}x\) को विषम फलन मानकर हल न करें। / The identity is (\cos^{-1}(-x)=\pi-\cos^{-1}x). Do not solve it by treating \(\cos^{-1}x\) as an odd function.

Which concept should I revise for this Mathematics MCQ?

The identity is (\cos^{-1}(-x)=\pi-\cos^{-1}x). Do not solve it by treating \(\cos^{-1}x\) as an odd function.

What exam hint can help solve this Mathematics question?

पहचान (\cos^{-1}(-x)=\pi-\cos^{-1}x) होती है। इसे \(\cos^{-1}x\) को विषम फलन मानकर हल न करें।