Math, asked by infernapeshashank, 2 months ago

Prove that 2cos2ø - 1 = cos2ø - sin2ø.

Answers

Answered by datars211gmilcom

0

Answer:

by LHS 2cos^A-1

=2cos^A-(sin^2A+cos^2A)

2cosA-sin^2A-cos^2A

cos^2A-sin^2A=RHS HP.

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