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2 years ago

Simplify the expressioncot^2x - cot^2x cos^2x

Mathematics

1 answer:

andrew-mc [135]2 years ago

8 0

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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