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Cos^2A+sin^2A.cos2B=cos^2B+sin^2B.cos2A

Cos^2A+sin^2A.cos2B=cos^2B+sin^2B.cos2A
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Cos^2A+sin^2A.cos2B=cos^2B+sin^2B.cos2A

User HernandoZ
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 I am unable to solve this, can you give more info
User Jigish Chawda
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