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Rewrite with only sin x and cos x. cos 3x

Rewrite with only sin x and cos x. cos 3x
asked 24.3k views
1 vote
Rewrite with only sin x and cos x. cos 3x

asked
User Rhytonix
by
7.9k points

1 Answer

6 votes

\cos (3x)=4\cos^3 x-3\cos x
answered
User Davit Mumladze
by
8.7k points
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