Please help me to find which step is wrong for d(w/theta)/dtheta. The correct answer is 2pai ( not -2pai-pai^2+4)

cos ( 2 ) = 0 Sin (2 ) = CR - Matrix Multi of Derivations exi) w = xytyz+ 2x 5 x = rose Solve ya rsino aw aw r=2 Wx = ytz ar , d6 0: Wy = X+z Wz = y+x = ( y+ z ) ( tose ) + (x+ 2 ) sino + (y + / JD X =0 1 .1 (0 + TT ) + ( 2 ) ( " ) = 2 1 ( V ) 4 = 2 X= Lost y = Sine O 2: 0 20 20 ( y + 2 ) ( - sin Oro ) + ( x + z ) w sbro + ly + x )r X= -Sinbro = (ytz ) ( - 71 ) + ( y + X ) r y = 605GNE = (2+ TT ) (-TT) + 25 = -217-1 + 4. (X ) = 27 = TT. case (2) 22 23 2x didy 12 dadx 28 dy