Math, asked by arshadsani122, 1 month ago

Prove that 2cos²a-1= 1-2sin²a

Answers

Answered by BodhikSriram

0

Answer:

both of these are equal to cos 2A

Answered by daddyesports12

0

Answer:

put cos^2a=1 - sin^2a and then solve u got ur answer

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