circuit numerical

The was an equation given like that: v(t) = 5cos(1256t-pi/4) Then I wanted to draw this graph below: Do I need to scroll the chart left or right? (In the cosine graph, I shifted it to the left side) Also I want to ask that, I have been always encountered with sine function graph drawings...

Here is the i (graph a) and i^2 graph (graph b) for the RMS calculation: My question is while calculating RMS value, should I decide to determine the period by looking a) or b) graph? Because, while I'm looking for the a. graph (shown above), I guessed the period is 2pi However, if I would...

Circuit diagram- here Okay so we need to calculate V which is Vb1e1 I guess. If we can get Ic1 then Vb1e1=R5*Ic1 if I'm correct. We have B=100 so Ic1=B*Ib1 ie 100Ib1. If we are to apply KVL, how do we go about it? What is the overall voltage in all the loops? Also, is it correct to use voltage...