SOLUTION: verify of the following is an identyity sin^4x-cos^4x=2sin^2x-1

SOLUTION: verify of the following is an identyity sin^4x-cos^4x=2sin^2x-1

Algebra.Com

Question 400530: verify of the following is an identyity
sin^4x-cos^4x=2sin^2x-1

Answer by Tatiana_Stebko(1539) (Show Source): You can put this solution on YOUR website!

Lets work with left side

Use FORMULA

Use FORMULAS
_____________

SO
is an identity

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