If the tangents at `t_(1) and t_(2)` to a parabola `y^2=4ax` are perpendicular then `(t_(1)+t_(2))^(2)-(t_(1)-t_(2))^(2)`=

The normal at t_(1) and t_(2) on the parabola y^(2)=4ax intersect on the curve then t_(1)t_(2)

If the normals at points t_(1) and t_(2) meet on the parabola,then t_(1)t_(2)=1 (b) t_(2)=-t_(1)-(2)/(t_(1))t_(1)t_(2)=2( d) none of these

The normal drawn at a point (at_(1)^(2),-2at_(1)) of the parabola y^(2)=4ax meets it again in the point (at_(2)^(2),2at_(2)), then t_(2)=t_(1)+(2)/(t_(1))(b)t_(2)=t_(1)-(2)/(t_(1))t_(2)=-t_(1)+(2)/(t_(1))(d)t_(2)=-t_(1)-(2)/(t_(1))

If the chord joining the points t_(1) and t_(2) on the parabola y^(2)=4ax subtends a right angle at its vertex then t_(2)=

If the tangents to the parabola y^(2)=4ax make complementary angles with the axis of the parabola then t_(1),t_(2)=

If the tangents at t_(1),t_(2),t_(3) on y^(2)=4ax make angles 30^(@),45^(@),60^(@) with the axis then t_(1),t_(2),t_(3) are in

The normal at the point (b t_(1)^(2), 2b t_(1)) on a parabola meets the parabola again in the point (b t_(2)^(2), 2b t_(2)) then

Let P(at_(1)^(2),2at_(1)) and Q(at_(2)^(@),2at_(2)) are two points on the parabola y^(2)=4ax Then,the equation of chord is y(t_(1)+t_(2))=2x+2at_(1)t_(2)

Area of the triangle formed by the threepoints 't_(1)^(prime)*'t_(2)^(prime) and 't_(3)^(prime) on y^(2)=4ax is K|(t_(1)-t_(2))(t_(2)-t_(3))(t_(3)-t_(1))| then K=