If tan A =n tan B and sin A =m sin B, Then the Value of cos² A is :

  1. (m² + 1)/(n²  – 1)
  2. (m² – 1)/ (n² – 1)
  3. (m² +1) / (n² + 1)
  4.  (m² – 1)/(n² + 1)
Anurag Mishra Professor Asked on 26th October 2015 in Maths.
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1 Answer(s)

Second Option is correct Answer

Monis Rasool Professor Answered on 28th October 2015.
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