Question: Help solving Use an Addition or Subtraction Formula to write the expression as a trigonometric function of one number. cos(250) cos(650) - sin(250) sin(65) Find

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Use an Addition or Subtraction Formula to write the expression as a trigonometric function of one number. cos(250) cos(650) - sin(250) sin(65) Find its exact value. Need Help? Read It Master It

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