Math, asked by priyagosain8722, 1 year ago

Prove that-
sin2A = cos2(A-B) + cos2B - 2 cos (A-B) cosAcosB

Answers

Answered by Sunny20167
1
please ask the question in science or maths not in English such questions I don't know so don't ask me and your friend don't ask again again again and again and don't disturb me at all please fight and do your
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