Bentuk tan² x - sec² x = ....
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Pertanyaan
Bentuk tan² x - sec² x = ....
1 Jawaban
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1. Jawaban ahmadzainuddin
tan^2x-sec^2x=sin^2x/cos^2x-1/cos^2x
=(sin^2x-1)/cos^x........ingat"sin^2x+cos^2x=1
=(sin^2x-(sin^2x+cos^2x))/cos^2x
=1