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November 2019 1 42 Report
Jika nilai x siantara 0 dan
\pi
penyelesaian dari persanaan
{ \sin}^{2}x - 2 \cos \: x = 1
adalah
a. -1
b. 0
c.
 \frac{1}{2}
d.
 \frac{1}{2} \sqrt{3}
e. 1

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