August 2018 1 816 Report
1. nilai dari cos 5π/6 adalah...

2. himpunan penyelesaian persamaan 2 cos ( 2x + 5/6 π) =  \sqrt{3} dengan 0  \leq x \leq \pi adalah...

tolong ya kak. yg jado matematika.. pake caranya juga.. terima kasih :)

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