Julie99 Julie99

24-09-2015
Mathematics

Answered

What is cosine of 8pi/3

Verified Answer :

adoorreji adoorreji

24-09-2015

cos ( 8pi /3 ) = ?
= cos ( 2 pi + ( 2pi / 3) )
= cos ( 2 pi /3 )
= - 1 / 2

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