6 A circle has equation
$$x ^ { 2 } + y ^ { 2 } + 10 x - 4 y - 71 = 0$$
6
- Find the centre of the circle.
6 - Hence, find the equation of the tangent to the circle at the point (1, 10), giving your answer in the form \(a x + b y + c = 0\) where \(a , b\) and \(c\) are integers.