Prove that: 4sin³A.cos 3A + 4cos³A.sin 3A = 3sin 4A

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Prove that: 4sin³A.cos 3A + 4cos³A.sin 3A = 3sin 4A
  1. Mr. Bidur Bastola
  2. Prove that: 4sin³A.cos 3A 4cos³A.sin 3A = 3sin 4A
  3. Mr. Bidur Bastola
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