The equation of a tangent to the parabola, x2 = 8y, which makes an angle 
with the positive direction of x-axis, is
(a)
x = ycot
+ 2tan
(b)
x=ycot
− 2tan
(c)
y= xtan
− 2cot
(d)
y = xtan
+ 2cot
The equation of a tangent to the parabola, x2 = 8y, which makes an angle with the positive direction of x-axis, is
(a)
x = ycot + 2tan
(b)
x=ycot − 2tan
(c)
y= xtan − 2cot
(d)
y = xtan + 2cot
Question ID - 57314 | SaraNextGen Top Answer
The equation of a tangent to the parabola, x2 = 8y, which makes an angle with the positive direction of x-axis, is
(a)
x = ycot + 2tan
(b)
x=ycot − 2tan
(c)
y= xtan − 2cot
(d)
y = xtan + 2cot
|
The equation of a tangent to the parabola, x2 = 8y, which makes an angle |
|||
|
(a) |
x = ycot |
(b) |
x=ycot |
|
(c) |
y= xtan |
(d) |
y = xtan |
1 Answer
127 votes
Answer Key / Explanation : (a) -
x2=8y
⇒ 
= 
= tan
∴ x1 = 4tan
y1 = 2 tan2
Equation of tangent
y − 2tan2
= tan 
(x−4tan 
)
⇒ x = y cot 
+ 2 tan 
127 votes
Answer Link
127