The equation of a tangent line to a given point of the ellipse (x1,y1) is x.x1^2/a^2+ y.y1^2/b^2=1. For the lines that passes from the point(0,3) and are tangent to the ellipse we have 0.x1/9+3.y1/4=1, then to get the coordinats of the points where the tangent lines touch the ellipse we have to...
The equation of a tangent line to ellipse is xx1/a^2+ yy1/b^2=1, where (x1, y1) are the coordinats of the point where the tangent line touch the ellipse in our case (3,0). Then the equation is x=8/3. Another way the equation is y-y1=m(x-x1),we have to find the slope m for that let find the...