CWE Journal Volume 7 Number 1

104

UPADHYAY et al., Curr. World Environ., Vol. 7(1), 101-108 (2012)

Fig. 3:

Fig. 4:

Fig. 5:

Fig. 6: ƒ ds

ds is the length of the chord for area b/a OAB, O ≤ ψ1 ≤ tan-1 ƒ ds = 2d. Sec ψ1 Similarly for area OBC, ≤ ψ2 ≤ tan-1 a/b

Where

=

b. Sec. ψ2