Jawabanmu

Jawaban paling cerdas!
2014-05-19T09:18:47+07:00
= cosec² 2x / cotan^4 x
= 2x / sin² / cos^4 x / sin^4
= 2x / sin/ cos^4 x/ sin^4
=2x sin^4 / sin cos^4 x
= 2x sin³ / cos^4 x
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