Two radio transmitters are located at T1(−6,0) and T2(6,0) on a Cartesian plane (distances in kilometres). A point P on the plane receives the signals such that the difference of its distances from T1 and T2 is always 6 km.
a. (i) Show that the locus of P is a hyperbola. Determine the values of a and c for this hyperbola.
b. (ii) Find the length of the semi-conjugate axis b.
c. (iii) Write the equation of the hyperbola.
d. (iv) Compute the eccentricity of the hyperbola and interpret its value in the context of this situation.