Circle problem
- The line joining points A(4, -2) and B(-4, 2) is a diameter of a circle. Find an equation for the circle.
- Find an equation for the line which is a tangent to the circle at point A.
- Find the exact area enclosed between the line and the coordinate axes outside of the circle.
- The tangent is translated by 5 units in the positive y-direction. Given that the new line intersects the circle at points C and D, find the distance |CD|.