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Verify the identity. cos 4u = cos^(2) 2u - sin^(2) 2u
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Verify the identity.


cos 4u = cos^(2) 2u - sin^(2) 2u

User N D Thokare
by
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1 Answer

8 votes

Answer:

Yes, it is an identity

Explanation:

User Lubos Hasko
by
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