Engineering Board Exam Reviewer · Ellipses · medium

Find the length of the latus rectum of the ellipse x2/36+y2/20=1.

  1. 10/3
  2. 40/3
  3. 20/3
  4. 6

Answer

C. 20/3

Solution

a=6 and b2=20. LR=2b2/a=40/6=20/3 6.67.

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