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  1. Sin x/2=1
  2. cos5x=-sqrroot3/2
  3. cos2x- sinx+2=0
  4. sin alpha=- 3/2
  5. 3pi/2
  6. 1-sin7alpha
  7. 2sin 8degree cos 8degrees
  8. sin4 alpha cos alpha-sin alpha cos4 alpha
  9. cos x/3>1/2
  10. tg2x>1
Guest May 30, 2017
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We are not here to do all your homework for you!!

Melody  May 30, 2017

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