SOLUTION: prove the following using double angle formula
A) sin^2 2A= 4cos^2 A- 4cos^4 A
plz help me solving ..
thx lots
Algebra.Com
Question 1120334: prove the following using double angle formula
A) sin^2 2A= 4cos^2 A- 4cos^4 A
plz help me solving ..
thx lots
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
\ =\ (\sin(2A))(\sin(2A)\))
\cos(A)\)\(2\sin(A)\cos(A)\))
\cos^2(A))
\)\(\cos^2(A)\))
You should be able to finish from here.
John
My calculator said it, I believe it, that settles it
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