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CBSE Class 11-science Answered

to find out the distance between the directrices of the hyperbola x=8seca ,y=8tana
Asked by prasun bairagi | 23 Nov, 2012, 09:35: PM
Expert Answer
This is the parametric equation of a hyperbola.
a =8, b = 8 (rectangular hyperbola)
e = sqrt (2)
Distance between directrices = 2a/ e = 8 sqrt (2)
Answered by | 26 Nov, 2012, 12:03: AM
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