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If p is any point on the ellipse x² 36 + y² 16 =1 , and S and S^ are the foci, then P S+P S^ =

Options

  1. A8
  2. B4
  3. C12
  4. D10

Correct answer

C. 12

Step-by-step solution

We have, equation of ellipse is aligned & x² 36 + y² 16 =1 x² (6)² + y² (4)² =1 & a=6, b=4 aligned Now, P S+P S=2 a=2 6=12

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