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**1. Homework Statement**

The equation of tangent is given t:2x+3y-2=0 and the equation of elipse E:x^2+4y^2=K

Find "a" and "b" and the coordinates of touching point D.

**2. Homework Equations**

equation of elipse: [tex]b^2x^2+a^2y^2=a^2b^2[/tex]

equation for touching: [tex]a^2k^2+b^2=n^2[/tex]

equation for K (if it is circular) : [tex]x^2+y^2=a^2[/tex]

**3. The Attempt at a Solution**

Actually, I don't know what is K? Is it the equation of circular? Thanks.