[" If the curves "(x^(2))/(a^(2))+(y^(2))/(b^(2))=1" and "],[(x^(2))/(l^(2))-(y^(2))/(m^(2))=1" cut each other "],[" orthogonally then "]

If the curves (x^(2))/(a^(2))+(y^(2))/(b^(2))=1 and (x^(2))/(c^(2))+(y^(2))/(d^(2))=1 intersect orthogonally, then

If the curves (x^(2))/(a^(2))+(y^(2))/(b^(2))=1 and (x^(2))/(c^(2))+(y^(2))/(d^(2))=1 intersect orthogonally, then

If the curves (x^(2))/(l^(2))+(y^(2))/(m^(2))=1 and (x^(2))/(64)+(y^(2))/(25)=1 cut each other orthogonally then l^(2)-m^(2)

Prove that the curve (x^(2))/(a^(2))+(y^(2))/(b^(2))=1(x^(2))/(a^(12))+(y^(2))/(b^(2))=1 intersect orthogonally if a^(2)-a^(2)=b^(2)-b^(2)

If the curves x^2/a^2+y^2/b^2=1 and x^2/l^2-y^2/m^2=1 cut each other orthagonally, then

Curve b^(2)x^(2) + a^(2)y^(2) = a^(2)b^(2) and m^(2)x^(2)- y^(2)l^(2) = l^(2)m^(2) intersect each other at right-angle if:

Curve b^(2)x^(2) + a^(2)y^(2) = a^(2)b^(2) and m^(2)x^(2)- y^(2)l^(2) = l^(2)m^(2) intersect each other at right-angle if:

The curve x^(2)-y^(2)=5 and (x^(2))/(18)+(y^(2))/(8)=1 cut each other at any common point at an angle-

The curves 2x^(2) + 3y^(2) = 1 and cx^(2) + 4y^(2) = 1 cut each other orthogonally then the value of c is: