August 2018 1 111 Report
1. HP 2 cos^x - 3 cos^x + 1 = 0 untuk 0
a. phi/6 , 5phi/6
b. phi/6 , 22phi/6
c. phi/3 , 2phi/3
d. phi/3 , 5phi/3
e. 2phi/3 , 4phi/3

pake cara yaa.. mohon bantuannya bgt :)
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