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Study Stuff for MCA Examinations - NIMCET
Study Stuff for MCA Examinations - NIMCET
Previous Year Question (PYQs)
An ellipse has center at $ (1,-2) $, one focus at $ (3,-2) $ and one vertex at $ (5,-2) $. Then the length of its latus rectum is :
Solution
$ CA_1 = a = 4 $
$ CF = ae = 2 $
$ \Rightarrow e = \frac{1}{2} $
$ LR = 2\left( \frac{a}{e} - ae \right) $
$ = 2 \times \frac{1}{2} \left( \frac{4}{1/2} - 2 \right) $
$ = 6 $
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