October 2018 1 854 Report
2. Jika sin x = t ,maka pernyataan yang benar adalah ..
a) sin 2x = 2t
b) tan 2x = 2t/1-t²,
c) cos 2x = 1-2t² ,
d) sin 3x = 3t ,dan
e) cos 3x = 3 √1-t²2
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