Find the angle to intersection of the following curves :

x2 + y2 = 2x and y2 = x

Given:


Curves x2 + y2 = 2x ...(1)


& y2 = x ...(2)


Solving (1) & (2),we get


Substituting y2 = x in x2 + y2 = 2x


x2 + x = 2x


x2 – x = 0


x(x – 1) = 0


x = 0 or (x – 1) = 0


x = 0 or x = 1


Substituting x = 0 or x = 1in y2 = x ,we get,


when x = 0,


y2 = 0


y = 0


when x = 1,


y2 = 1


y = 1


The point of intersection of two curves are (0,0) & (1,1)


Now ,Differentiating curves (1) & (2) w.r.t x, we get


x2 + y2 = 2x


2x + 2y. = 2


x + y. = 1


y. = 1 – x


...(3)


y2 = x


2y.1


...(4)


At (1,1) in equation(3),we get




m1 = 0


At (1,1) in equation(4),we get





m2


when m1 = 0 & m2



tanθ


tanθ


tanθ


tanθ


θ = tan – 1()


θ26.56


1