Math, asked by bigyastha, 10 months ago

Derive:
cos 2A = 1-tan ²A/1+ tan^2 A

Answers

Answered by grissaiadapa

0

Answer:

cos^2A-sin^2A

cos^2A( 1- sin^2A/cos^2A)

1-tan^2A/sce^2A

1-tan^2A/1+tan^2A

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