MathematicsMedium175×since 2002Q2782If the curves, x2a+y2b=1{{{x^2}} \over a} + {{{y^2}} \over b} = 1ax2+by2=1 and x2c+y2d=1{{{x^2}} \over c} + {{{y^2}} \over d} = 1cx2+dy2=1 intersect each other at an angle of 90∘^\circ∘, then which of the following relations is TRUE?Aa −-− c = b + dBa + b = c + dCab=c+da+bab = {{c + d} \over {a + b}}ab=a+bc+dDa −-− b = c −-− dCheck answerSkip