nainamoras nainamoras
  • 02-02-2018
  • Mathematics
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Evaluate: (sec²37° -cot²53°)tan21°tan69°-sin51°cos49°-cos51°sin49°

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Аноним Аноним
  • 02-02-2018
= 1 * 1 - (sin (51 + 49)

= 1 - 0.9848 
= 0.0152  answer
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