The number of tangents to the parabola y^2=8x through (2,1) is
Rishi Kumar rai , 7 Years ago
Grade 11
Analytical Geometry> The number of tangents to the parabola y^...
1 AnswersMssr Saketh
Last Activity: 7 Years ago
Substitute the point (2,1) in the given curve Equation y2=8x=>(1) 2=8(2).The value is not equal. It means the point is not on the parabola. (2,1) is an external point.As parabola appears to be as a part of circle(but not) TWO tangents can be drawn to parabola from (2,1).
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