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  • 25-04-2017
  • Mathematics
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simplify the expression

cot^2x - cot^2x cos^2x

simplify the expressioncot2x cot2x cos2x class=

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Аноним Аноним
  • 25-04-2017
cot^2x - cot^2x cos^2x
= cot^2x - {(cot^2x)(cos^2x)}
= cot^2x { 1 - cos^2x }
= cot^2x { sin^2x }
= (cos^2x/sin^2x) { sin^2x }
= cos^2x
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