Easy Math Class 12 Level 3

What is the principal value of cos inverse(-1)?

cos inverse(-1) का principal value क्या है?

Show answer and explanation
Correct Answer

C. π

Explanation

Step 1: Identify the concept: this is inverse trigonometric value. Step 2: cos π = -1 and principal range of cos inverse is [0,π]. Step 3: Remember cos inverse -1 as π.

Step 1: concept पहचानें: यह inverse trigonometric value है। Step 2: cos π = -1 होता है और cos inverse की principal range [0,π] है। Step 3: cos inverse -1 को π से याद रखें।

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