X= -135°, cos 2x =
1 - 2 sin^2 x
1 - 2 sin x
1 + 2 sin^2 x
1 + 2...
Mathematics, 14.12.2019 06:31 kyramillerr8639
X= -135°, cos 2x =
1 - 2 sin^2 x
1 - 2 sin x
1 + 2 sin^2 x
1 + 2 sin x
Answers: 1
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