If the curves x^2/a + y^2/b = 1 and x^2/c + y^2/d = 1 intersect at right angles, then which one is the correct relation?

Category: QuestionsIf the curves x^2/a + y^2/b = 1 and x^2/c + y^2/d = 1 intersect at right angles, then which one is the correct relation?
Editor">Editor Staff asked 11 months ago

If the curves x^2/a + y^2/b = 1 and x^2/c + y^2/d = 1 intersect at right angles, then which one is the correct relation?
 
(a) b – a = c – d
 
(b) a + b = c + d
 
(c) a – b = c – d
 
(d) a – b = c + d
 
The question was posed to me by my school principal while I was bunking the class.
 
My doubt stems from Calculus Application in division Application of Calculus of Mathematics – Class 12
NCERT Solutions for Subject Clas 12 Math Select the correct answer from above options 
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