Question

I need help with this exercise, I don't even know where to start.
imgur(dot)com/WDCikKK(dot)png
Damon
https://i.imgur.com/WDCikKK.png

Sorry, I do not know your variable names. What is voltage, current, phase shift etc?
Damon
Like is Zl a complex impedance or a resistance or an inductance or what ?
Arnau EC
That is all the information there is, there is no V, Current or phase shift, just whats on the photo... u.u