1. The problem statement, all variables and given/known data What is the amplitude of the spectroscopic signal if the inclination is 45 degrees? Mass star = 1 mass of sun = 1.9891 x 10^30kg Mass Planet = 10 mass Earth = 5.9736 x 10^25kg Orbital period = 1 year 2. Relevant equations I'm not sure about even what equation to use. 3. The attempt at a solution I calculated the velocity of both masses, with velocity of the planet equalling 29.7km/s and the velocity of the star being 0.891km/s.