steve816
  • steve816
Warning: Extremely difficult. Please attempt this for me!!! Prove the identity.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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steve816
  • steve816
\[1-8\sin^2\theta \cos^2\theta =\cos(4\theta)\]
seascorpion1
  • seascorpion1
Use demoveries theorem.
WolframWizard
  • WolframWizard
1-2sinθcosθ*2sinθcosθ*2 1-2sin(2θ)sin(2θ) 1-2sin^2(2θ) cos(2*2θ) cos(4θ)

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seascorpion1
  • seascorpion1
Great answer!!!
steve816
  • steve816
Wow @WolframWizard You're a genius!
steve816
  • steve816
May I ask what your thought process was? I just can't seem to understand how you can figure this out.
WolframWizard
  • WolframWizard
I try to pull the expressions apart as much as possible so I can use identities to piece it back together into what I want.

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