I have one last homework question that I am stuck on. I am attaching the picture. The earth has a radius of 6.38x10^6m and turns on its axis once every 23.9 hours. a) what is the tangential speed (in m/s) of a person living in Ecuador, a country that lies on the equator? b) at what latitude (i.e. the angle(theta) in the drawing and in degrees) is the tangential speed one-third of a person living in Ecuador I solved part a, no problem, but part b?????? part a: converted time from hours to seconds 86040s 1rev-2(pi)(rad)=6.28rad omega(angular speed)= 6.28rad/86040s = 7.3x10^-5 rad/s Vt=r(omega)= 466m/s but I am lost on b and I have been working on it for hours!!!