Question
The equation of the tangents drawn at the ends of the major axis of the ellipse 9x2 + 5y2 – 30y = 0 is
- y = ± 3
- x = ±
- y = 0, y = 6
- none of these
Hint:
Convert the given equation in standard form i.e.
The correct answer is: y = 0, y = 6
Given : 
Adding and subtracting the above by 45
Center coordinates = (0,3)
At x = 0
On solving we get :
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then A-B=
