What is the overlap of Data Set 1 and Data Set 2? high moderate low none Two line plots aligned vertically so that their labels
match. The first line plot is from 20 to 60, is labeled Data Set 1, and shows the following values that appear as x marks above the line. One x mark above 20. Three x marks above 25. Three x marks above 30. Two x marks above 35. One x mark above 40. The second line plot is also from 20 to 60, is labeled Data Set 2, and shows the following values that appear as x marks above the line. One x mark above 35. Two x marks above 40. Three x marks above 45. Two x marks above 50. One x mark above 55. One x mark above 60. Image: Do not include the blue squiggly lines under the Xs.
2 answers:
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Solution:
As we know reference angle is smallest angle between terminal side and X axis.
As cosine 45 ° is always positive in first and fourth quadrant.
i.e CosФ, Cos (-Ф) or Cos(2π - Ф) have same value.
As, Cos 45°, Cos (-45°) or Cos ( 360° - 45°)= Cos 315°are same.
So, Angles that share the same Cosine value as Cos 45° have same terminal sides will be in Quadrant IV having value Either Cos (-45°) or Cos (315°).
Also, Cos 45° = Sin 45° or Sin 135° i.e terminal side in first Quadrant or second Quadrant.
