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 Homework Statement
 The spaceship S approaches Mars following the trajectory ##b−b## with velocity ##19.3 km/s## with respect to the Sun. If Mars has a velocity ##24.1 km/s## along the trajectory ##a−a## with respect to the Sun and the angle between ##bb## and ##aa## is ##30°## determine the angle between ##SM## and ##b−b## such that a person inside the spaceship "sees" that Mars is moving towards him
 Homework Equations
 ##v_{M/S}=v_M  v_S##.
I know that ##v_{M/S}=v_M  v_S##. I also know that ##v_M = (24.1;0)##. Then, using some trigonometry, ##v_S=(19.3 sin 30°;19.3 cos 30°)##.
So I can find ##v_{M/S}##. But that doesn't tell me anything about the angle ##\beta##.
So I can find ##v_{M/S}##. But that doesn't tell me anything about the angle ##\beta##.
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