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Question

P is a point on the ellipse fraction numerator x to the power of 2 end exponent over denominator 36 end fraction plus fraction numerator y to the power of 2 end exponent over denominator 9 end fraction equals 1, S and S to the power of 1 end exponent are the focii of the ellipse then S P plus S to the power of l end exponent P equals

  1. 6    
  2. 12    
  3. 6 s i n space 60 to the power of ring operator    
  4. 6 c o s space 60 to the power of ring operator    

The correct answer is: 12

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