Prove that Cos2A = 1 – Tan^2A/1 + Tan^2A

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In this video I have explained how to prove that Cos2A = 1 – Tan^2A/1 + Tan^2A

Formulas used in this video
TanA = SinA/CosA
Cos2A = Cos^2A - Sin^2A

  1. Competition Pandit
  2. Maths
  3. Trigonometry
  4. Class 11
  5. Class 12
  6. IIT JEE Math
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