For a given cone angle and freestream Mach number, how many oblique shock(s) is/are present?

For a given cone angle and freestream Mach number, how many oblique shock(s) is/are present? Correct Answer 2

For a conical flow placed in a freestream Mach number M∞ with a particular cone angle θc, there exists two oblique shock waves which is a result of one weak and one strong solution. It is similar to the case of wedge where using θ – β – M graph we obtain two shock waves.
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