1. the locus of point (l,m). if the line lx+my=1touches the circle x^2+y^2=a^2a – x^2+y^2=2a^2b – 2x^2+2y^2 = a^2c – a^2(x^2+y^2) = 1d – a^2(x^2+y^2) = 22. locus of point of intersection of tangentsto the circle x^2+y^2+2x+4y-1 = 0a – x^2+y^2+2x+4y-19 = 0b – x^2+y^2-2x-4y-19 = 0c – x^2+y^2+2x+4y+19 = 0d – x^2+y^2-2x-4y+19 = 03. locus of point of intersection ofperpendicular tangents to the circlex^2+y^2 = 10a – x^2+y^2 = 5b – x^2+y^2 = 20c – x^2+y^2 = 10d – x^2+y^2 = 100
RAJEEV R , 9 Years ago
Grade 9
