Math, asked by smitadhikale18, 1 year ago

What is the principal value of cos inverse ( -1/2)

Answers

Answered by mass32
1

let y=cos inverse(-1/2)

therefore

cos(y)=-(1/2)

cos(y)=-cos(pie/3)

cosy=cos[pie-(pie/3)]

cosy=cos(2pie/3)

therefore y=2pie/3.

MARK BRAINLIEST

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