If x = \frac{2at}{1+t^2} , y = \frac{a(1-t^2)}{1+t^2} , where t is a parameter , then a is

Correct Answer is : the radius of a circle

the length of the latus rectum of a parabola

the length of the transverse axis of a hyperbola

the length of the semi-major axis of an ellipse

TS EAMCET 04 May 2019 Shift 2 Solved Paper

Section: Mathematics

Question : 49 of 160

Marks: +1, -0

If x =

2at

1+t2

, y =

a(1−t2)

1+t2

, where t is a parameter , then a is

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