1.

Find the coordinates of the foci, the vertices, the eccentricity and the length of the latus rectum of the Hyperbola `16x^(2)-9y^(2)=576`

Answer» Equation of hyperbola
`16x^(2)-9y^(2)=576`
`rArr(x^(2))/(36)-(y^(2))/(64)=1`
`:.` The transverse axis of hyperbola is along x-axis.
Comparing with `(x^(2))/(a^(2))-(y^(2))/(b^(2))=1`
`a^(2)=36," "b^(2)=64`
`rArr" "a=6," "b=8`
`:. "Vertices" -=(pma,0)-=(pm6,0)`
Eccentricity `e=sqrt(1+(b^(2))/(a^(2)))=sqrt(1+(64)/(36))`
`=sqrt((100)/(36))=(10)/(6)=(5)/(3)`
Now, ae `=6xx(5)/(3)=10`
`:. "Coordinates of foci" -=(pmae,0)=(pm10,0)`
Length of latus rectum `=(2b^(2))/(a)`
`=(2xx(8)^(2))/(6)=(64)/(3)`


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