We have a load with a return loss of 22dB, calculate the reflection coefficient I and the voltage standing wave ratio VSWR. Determine the load impedance Z, if the line impedance Z,=75 2

I turned the voltage value of the AC source into Vrms and got magnitude 16.97 & angle 10.Then calculated the impedance of Load A to be [ -9.28 - j23.4 ]. From that, I calculated the complex power of load B to be [ -2.42 + j6.33 ] my power factor calculation I am using inverse tan ( Q/P) , where Q i got -1.91 & P to be 5.559, which I got from my total complex power. If that helps. But I am calculating a negative power factor, so i am curious where I went wrong, Thank you!

The impedance of a transmission line with a length of 50 km is given as z = 0.08 + j0.48 22/km. At the end of the line, a power of 250 MW is drawn with a lagging power factor of cosy = 0.95 under 220 kV voltage. Under these conditions, find the voltage, current, and power factor at the beginning of the line.

Please find Preal, Ptotal, and Pvar