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Angle between the tangents drawn to parabola y^(2)+4a^(2)-4ax=0, from origin is : |
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Answer» `30^(@)` ![]() `C_(1):(x+1)^(2)+y^(2)=9,C_(2):(x-2)^(2)+y^(2)=49` `because QR = R+3` `PR = 7-r` `impliesPR+QR=10` `therefore` Locus of point R is an ELLIPSE for which 2a = 10 and P and Q are its FOCUS. `implies2a=10" and "2ae = PQ =3impliese=(3)/(10)` |
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