Prove that:
(tan^2A-tan^2B)=(sin^2A-sin^2B)/cos^2A×cos^2B=(cos^B-cos^A)/cos^2B×cos^2A
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if you have any doubt please comment thank you
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mansimj2003:
Thanku soo much...Can uh plss also solve the 2nd part of this Q
ok
i kept both parts dont worry
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Thanks
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