If tanB= n tanA/ 1+(1-n) tan^2 A, prove that tan (A-B)= (1-n) tan A

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If tanB= n tanA/ 1+(1-n) tan^2 A, prove that tan (A-B)= (1-n) tan A

If tanB= n tanA/ 1+(1-n) tan^2 A, prove that tan (A-B)= (1-n) tan A

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