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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