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A Nice Equation - Cosine Double and Triple Angles

A Nice Equation - Cosine Double and Triple Angles

MindYourDecisions via YouTube Direct link

method 1

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2 of 4

method 1

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A Nice Equation - Cosine Double and Triple Angles

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  1. 1 problem
  2. 2 method 1
  3. 3 method 2
  4. 4 method 3

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