If cos^2 A - sin^2 A = tan^2 B, Wirte the value of 1 - 2sin^2 B in terms of tan A

If cos^2 A - sin^2 A = tan^2 B, Wirte the value of 1 - 2sin^2 B in ter

1.	If cos^2 A - sin^2 A = tan^2 B, Wirte the value of 1 - 2sin^2 B in terms of tan A
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