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Prove that Tan²A Sec²B -Tan²B Sec²A = tan²A-tan²B |
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Answer» Step-by-step EXPLANATION: RHS =tan²Asec²B-tan²Bsec²A =tan²A(1-tan²B)-tan²B(1-tan²A) =tan²A-tan²Atan²B-tan²B+tan²Atan²B =tan²A-tan²B |
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