If `x^2+y^2=1`then

A circle C and the circle x^2 + y^2 =1 are orthogonal and have radical axis parallel to y-axis, then C can be : (A) x^2 + y^2 + 1 = 0 (B) x^2 + y^2 + 1 = y (C) x^2 + y^2 + 1 = -x (D) x^2 + y^2 - 1 = -x

A circle C and the circle x^2 + y^2 =1 are orthogonal and have radical axis parallel to y-axis, then C can be : (A) x^2 + y^2 + 1 = 0 (B) x^2 + y^2 + 1 = y (C) x^2 + y^2 + 1 = -x (D) x^2 + y^2 - 1 = -x

If x^(2)+y^(2)=1 , the minimum and maximum values of x+y are

Calculate the area of the region enclosed between the circles : x^2 + y^2 = 1 and (x - 1)^2 + y^2 = 1 (using integration)

Find the area of the region enclosed between the two circles x^2 + y^2 =1 and (x-1)^2 + y^2 = 1

Find the area bounded by curves ( x - 1)^2 + y^2 = 1 and x^2 + y^2 = 1.