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How is the value of cosec^-1(-cosec(π/4)) = -π/4 when -π/4 is not inside the range of cosec^-1?(-pi/4 is greater than pi/4)

Ayush Kumar , 5 Years ago
Grade 11
anser 1 Answers
Arun

Last Activity: 5 Years ago

Dear student
 
cosec^-1 (- cosec pi/4) = – cosec^-1( cosec pi/4) = – pi/4
 
Hence answer is – pi/4
 
also – pi/4 lies in range.

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