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SMO 2016 Senior Round 1 Question 10

SMO · SMO 2016 Senior Round 1

Question 10

Let a=cos 282°, b=cos 349°, c=sin 102° and d=sin 169°. Which of the following is true?
  1. $b\gt a\gt c\gt d$
  2. $b\gt c\gt a\gt d$
  3. $c\gt a\gt d\gt b$
  4. $a\gt d\gt b\gt c$
  5. $a\gt c\gt d\gt b$