Using the formula, CosA = root((1+Cos2A)/2), find Cos30 if Cos60=1/2 /Trigonometry Doubt

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Trigonometry/ 10th/CBSE/NCERT
  1. MEGA MIND ACADEMY
  2. Using the formula
  3. CosA = root((1 Cos2A)/2)
  4. find Cos30 if Cos60=1/2
  5. Trigonometry/ 10th/CBSE/NCERT
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