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    Mathematics
  3. Study Set
    Algebra and Trigonometry Study Set 3
  4. Exam
    Exam 8: Polar Coordinates and Parametric Equations
  5. Question
    \(\cos ( x + y ) = \cos x + \cos y\)
Solved

cos⁡(x+y)=cos⁡x+cos⁡y\cos ( x + y ) = \cos x + \cos ycos(x+y)=cosx+cosy

Question 71

Question 71

True/False

cos⁡(x+y)=cos⁡x+cos⁡y\cos ( x + y ) = \cos x + \cos ycos(x+y)=cosx+cosy

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