θp

θs

θi

π − θMax

(lfc3/2G) − π (0.1208)

π − (lfc3/2G) (−0.1208)

π − (lfc3/2G) (−0.1208)

θMax

2π − (lfc3/2G) (3.02079)

(lfc3/2G) (3.26239)

(lfc3/2G) (3.26239)