railway RRB JE (CBT I + CBT II) Mock Test 2024 Fluid Mechanics Dimensional and Model Analysis Dimensionless Number
Mach angle is denoted as
1
sin-1(M)
2
\({\sin ^{ - 1}}\left( {\frac{1}{{\rm{M}}}} \right)\)
3
\({\cos ^{ - 1}}\left( {\frac{1}{{\rm{M}}}} \right)\)
4
\({\tan ^{ - 1}}\left( {\frac{1}{{\rm{M}}}} \right)\)