If Cos A + Sin A =√2Cos A then Cos A- Sin A is equal to:

(where 0o<A<90o)

  1. √(2Sin A)
  2. 2√Sin A
  3. √2 Sin A
  4. 2 Sin A
Anurag Mishra Professor Asked on 10th December 2015 in Maths.
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1 Answer(s)

Answer:  (1) sqrt. (2 SinA) 

Anurag Mishra Professor Answered on 10th December 2015.
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