September 2018 1 1K Report
Himpunan penyelesaian persamaan 4 sin x = 1+ 2cos 2x,  0^{o} \leq x \leq 360^{o} adalah...
a. (  30^{o} , 150^{o}   )
b. (  30^{o} , 210^{o}   )
c. (150^{o} , 210^{o}   )
d. (210^{o} , 330^{o}   )
e. (240^{o} , 300^{o}   )

Tolong dibantu ya,sekalian tulis jalannya y
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