Expression 7: "z" left parenthesis, theta , "r" , "h" , right parenthesis equals cosine left parenthesis, "a" Subscript, 2 , Baseline , right parenthesis "r" sine left parenthesis, "a" plus theta , right parenthesis minus sine left parenthesis, "a" Subscript, 2 , Baseline , right parenthesis "h"zθ,r,h=cosa2rsina+θ−sina2h
Hidden Label: left parenthesis, StartFraction, negative "a" Over 15 , EndFraction , StartFraction, "a" Subscript, 2 , Baseline Over 15 , EndFraction , right parenthesis−a15,a215