Use an Addition or Subtraction Formula to simplify the equation 1 cos(0) cos(20) sin(0) sin(20) 2 Find all solutions in the interval [0, 2t). (Enter your answers as a comma-separated list.) 0 =

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A: This question is related to trignometry we will use trignometric identities to solve this.

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A: follow the procedure given below.

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A: Topic = Trigonometry

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