Math, asked by dfthivhj, 1 year ago

prove that,cos^2 (A+B)-sin^2 (A-B)=Cos2A cos2B

Answers

Answered by Anonymous

21

hope it's helpful.........

Attachments:

Anindya123: But how both -sin2Asin2B get cancelled?

Anonymous: last me sin2ASin2A positive hi h.........galti se - likh gya

Answered by wahidsourov

0

Answer:

Step-by-step explanation:

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