1.

Mach angle α and Mach number M are related as

A. \(M = {\sin ^{ - 1}}\left( {\frac{1}{\alpha }} \right)\)
B. \(\alpha = {\cos ^{ - 1}}\left( {\sqrt {\frac{{{M^2} - 1}}{{{M^2}}}} } \right)\)
C. \(\tan \alpha \left( {\sqrt {{M^2} - 1} } \right)\)
D. \(\alpha = cose{c^{ - 1}}\left( {\frac{1}{M}} \right)\)
Answer» C. \(\tan \alpha \left( {\sqrt {{M^2} - 1} } \right)\)


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