Dumb Question. Why the equation of circle were taken to be x2 + y2 + 2i x + a = 0 ? Where did the 'y' term went ? Ans- Such equation of the circle can be taken if we chose the axis suitably ...

DUMB QUESTION (Q) Why in this question we used family of circles and not did it directly by taking an an arbitrary circle and applying the given information ? (A) Whenever it is given that kthe...

For point of contact - Let P(x, y) be the point of contact, Pdivixles c1c2 externally in ratio of = 1 : 2 using section formula, we get, P(x, y)(2, 0) is the point of contact . 15 and...

Pair of tangents - T 2 = ss1 Equation of normal- The normal to a curve at any P of a curve is the straight line which passes through P and is perpendicular to the tangent at P . The...

Alter native method - let P be the point on the circle x2 + y2= 4 distance . 4/5 from given line. the distsnce from line = 4/5 Solve for to get the point . Equation of tangent in general...

(7) Parametric form- general point of a circle if centre is (0,0) isparameter (radius) Illustration -2- Find the equation a circle which touches the .y axis at (0, 4) and cuts

Introduction Most of the things that we see around us are circular. Sun, moon on full moon day bangle mery-go around, which you loved so much when you where a child; all happened to circles. Ever...