a) cos^2 A - cos^2 B b) tan^2 A - tan^2 B c) tan^2 A - tan^2 B d) sin^2 A - sin^2 B please show the steps you take to get to the answer! thank you
sin (a-b) = sin a cos b - cos a sin b product sin^2 a cos^2 b - cos^2 a sin^2 b now divide by cos^2 a cos^2 b sin^2 a/cos^2a - sin^2 b/ cos^2 b = tan^2 a - tan^2 b
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