The circle C1 C_1\,C1 has centre (0,0)(0,0)(0,0) and radius 5.
The circle C2 C_2\,C2 has centre (t,12)(t,12)(t,12) and radius 8.
Find all values of t t\,t for which the circles touch.
[5]
Markscheme
1.3.4 Coordinate geometry in the (x, y) plane Questions
8 exam-style questions on WJEC A Level Maths 1.3.4 Coordinate geometry in the (x, y) plane. Each one has a worked solution and a mark scheme showing where the marks go.