SOLUTION: Please help prove identity:
{{{2sin(2x)cos(2x)=4cos(x)(sin(x)-2(sin(x))^3)}}}
thank you
Algebra.Com
Question 232805: Please help prove identity:
thank you
Answer by eggsarecool(46) (Show Source): You can put this solution on YOUR website!
Two formulas you need are and the other is
Using these we can rewrite the left side to become.
Now we distribute the that is on the outside.
this proves your identity.
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