Equation of tangent
Ellipse of Class 11
Equation of Tangent
(a) At (x1, y1)
= 1
(b) At (acosθ, bsinθ )
+ 
= 1
(c) In slope form
y = mx ± 
Equation of Normal
(a) At (x1, y1) is 
(b) At (acosθ, bsinθ ) is axsecθ − bycosecθ = a2 − b2
(a) At (x1, y1)
= 1
+ = 1
y = mx ±
Equation of Normal
(a) At (x1, y1) is
(b) At (acosθ, bsinθ ) is axsecθ − bycosecθ = a2 − b2
