February 2019 1 13 Report
1. nilai sin 195° cos 15° adalah
2. himpunan penyelesaian persamaan 4 sin² x + 4 cos x = 1 untuk -π ≤ x ≤ π adalah
3. jika √3 sin x = cos x , maka x =
4. 2 sin 157,5° cos 157,5° =

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