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The area enclosed by the ellipse (x^(2))...

The area enclosed by the ellipse `(x^(2))/(a^(2)) + (y^(2))/(b^(2)) = 1` is equal to

Text Solution

Verified by Experts

The correct Answer is:
`a rarrp; b rarr r, s;c rarr q; drarrs`

We have
`A=ae_(E) and a=Ae_(H)`
`"or "e_(E)e_(H)=1`
`therefore" "e_(E)+e_(H)gt2" "("Using "e_(E)+e_(H)gtsqrt(e_(E)e_(H)))`
`B^(2)=A^(2)(e_(H)^(2)-1)=a^(2)(1-e_(E)^(2))=b^(2)`
`"or "(b)/(B)=1`
Also, the angle between the asymptotes is
`2tan^(-1).(B)/(A)=(2pi)/(3)`
Also, `(B)/(A)=sqrt3or(b)/(ae_(E))=sqrt3ore_(E)^(2)=(1)/(4)`
Solving `(x^(2))/(a^(2))+(y^(2))/(b^(2))=1 and (x^(2))/(a^(2)e_(E)^(2))-(y^(2))/(b^(2))=1 or(2x^(2))/(a^(2))-(y^(2))/(b^(2))=1`
Now, solve.
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(1) Draw the rough sketch of the ellipse (x^(2))/(a^(2)) + (y^(2))/(b^(2)) = 1 . Find the area enclosed by the ellipse (x^(2))/(a^(2)) + (y^(2))/(b^(2)) = 1 .

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Knowledge Check

  • Area of the greatest rectangle inscribed in the ellipse (x ^(2))/(a ^(2)) + (y ^(2))/( b ^(2)) =1 is

    A
    `2 ab`
    B
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  • Sum of the focal distance of the ellipse (x^2)/(a^2) + (y^2)/(b^2) = 1 is

    A
    2b
    B
    2a
    C
    2ab
    D
    a+b
  • Area of the greatest rectangle inscribed in the ellipse x^(2)/a^(2) + y^(2)/b^(2) =1 is

    A
    2ab
    B
    ab
    C
    `sqrt(ab)`
    D
    `a/b`
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