SOLUTION: Prove the identity a) sin^4 x - cos^4 x = 1 0 2cos^2 x Can you please help me ? Thanks so much in advance:)

SOLUTION: Prove the identity a) sin^4 x - cos^4 x = 1 0 2cos^2 x Can you please help me ? Thanks so much in advance:)

Algebra.Com

Question 870190: Prove the identity
a) sin^4 x - cos^4 x = 1 0 2cos^2 x
Can you please help me ? Thanks so much in advance:)
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!

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