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17-09-2019
Mathematics

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12. Rewrite with only sin x and cos x.
cos 2x - sin x

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17-09-2019

Use the double angle formula

[tex]\cos(2x)=\cos^2(x)-\sin^2(x)[/tex]

To write

[tex]\cos(2x)-\sin(x) = \cos^2(x)-\sin^2(x)-\sin(x)[/tex]

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