Circle1 with radius intersects with Circle 2 with radius . The Circle 1 has center , and Circle 2 has the center at the initial point. When the Circle 1 rotates with an angle θ, the Circle 2 that is attached to the Circle 1 change its coordination of the centre from to$(-d\cos\theta, -d\sin\theta)$.
I have a problem determining as shown in the figure.
I am not a mathematician. So, take me easy! Thank in advance !