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6.4.2 sum and difference formulas

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6.4.2 sum and difference formulas

  1. 1. Using Sum/Difference to Find Exact Values (Angles Measured in Radians)
  2. 2.  cos cos cos sin sin         cos cos cos sin sin       
  3. 3. 7 12cos   3 4cos     3 4 3 4cos cos sin sin          32 21 2 2 2 2 62 4 4  1 4 2 6
  4. 4. 7 12cos   3 4 6cos     3 3 4 6 4 6cos cos sin sin          32 2 1 2 2 2 2  6 2 4 4   1 4 2 6
  5. 5.  sin sin cos cos sin         sin sin cos cos sin       
  6. 6. 5 12sin   6 4sin     6 4 6 4sin cos cos sin          32 21 2 2 2 2 62 4 4  1 4 2 6
  7. 7.  2 3 4sin     2 2 3 4 3 4sin cos cos sin          3 2 21 2 2 2 2  6 2 4 4  1 4 6 2 5 12sin 
  8. 8.   tan tan tan 1 tan tan             tan tan tan 1 tan tan          
  9. 9. 13 12tan   3 4 3tan     4 3 4 3 tan tan 1 tan tan          1 3 1 1 3      1 3 1 3    1 3 1 3    4 2 3 1 3     4 2 3 2    2 3 
  10. 10. 13 12tan   4 3 4tan     4 3 4 4 3 4 tan tan 1 tan tan          3 1 1 3 1    3 1 1 3   1 3 1 3    4 2 3 1 3     4 2 3 2    2 3 
  11. 11. 5 5 12 12 12 12sin cos cos sin     sin cos cos sin     sin    5 12 12sin    2sin  1
  12. 12. 2 2 9 9 9 9cos cos sin sin     cos cos sin sin     cos    2 9 9cos     3cos  1 2
  13. 13. p. 481 # 9 - 12, 17 - 20, 27 - 30

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