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+//Problem 24.07: For the circuit shown in Figure 24.11, determine the value of impedance Z2.
+
+//initializing the variables:
+rv = 70; // in volts
+thetav = 30; // in degrees
+ri = 3.5; // in amperes
+thetai = -20; // in degrees
+//z1 consist of two resistance
+R1 = 4.36; // in ohms
+R2 = -2.1*%i; // in ohms
+
+//calculation:
+V = rv*cos(thetav*%pi/180) + %i*rv*sin(thetav*%pi/180)
+I = ri*cos(thetai*%pi/180) + %i*ri*sin(thetai*%pi/180)
+//impedance, Z
+Z = V/I
+//Total impedance Z = z1 + z2
+Z1 = R1 + R2
+Z2 = Z - Z1
+x = real(Z2)
+y = imag(Z2) 
+
+printf("\n\n Result \n\n")
+printf("\n impedance Z2 is %.2f + (%.2f) ohm\n",x,y)
+\ No newline at end of file