From Ryzhik and Gradshteyn (1965 - page 402) and noting that the second 

 integrand is odd we get Equation (7.23) equivalent to 



C0S>\Hl[2t\COs(^) Jy,(^') 1 (7.25) 



where J (Z) is the Bessel function of the first kind. Employing a simi- 

 lar procedure for Equations (7.20), (7.21), and (7.22) we get 



C0s(^)J„(21tKt.)l 

 W^SiNV^lV air S^Mto^ J^(aHKD)l (7.26) 



y\-\ 





Thus we get 



■»i=i,*,«.-- _ 



+ j 2 [iTiX(2r Ko)(-f^ (a„C.s » t+bv-sm n*)) 



^'^^A'" .21) 



38 



