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Question

cos1x{cos(13π6)} is equal to



Your Answer
A

π6
 

Correct Answer
B

5π6
 

Your Answer
C

π6
 

Your Answer
D

None


Solution

The correct option is B

5π6
 


cos1x{cos(13π6)}             Use the result  cos1(x)=πcos1x=πcos1(cos(13π6))=πcos1(cos(2π+π6))=πcos1(cos(π6))=ππ6=5π6

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