The resultant pressure is AP(1)=AP()+AP(0=2AP. cos(@@ (1+O2) sIn (1932) Set O1+0 (1933) 2 amp (1934) △P(1)=2△PnC0s(m1)si(Oa1) (1935)The resultant pressure is (19-32) Set (19-33) 2 1 2  + av = 2 1 2  − amp = P(t) 2 P cos( t)sin( t)  =  m amp a v P t P t P t P t t m 2 ( ) ]sin 2 ( ) ( ) ( ) ( ) [2 cos 1 2 1 2 1 2  −  +  =  +  =  (19-34) (19-35)