00:02
All right, so in this question, we're looking at some electrical properties, and specifically that a resistor and an inductor, when connected in series, impede the flow of an alternating current.
00:21
Now, the way the problem puts this is that you can solve for that impedance using a right triangle, knowing that the impedance z, and the inductance equals x and the resistance equals r we can draw our right triangle as this so we have x r z and our phase angle and so from this we know z squared equals x squared plus r squared and so for part a of this which we are sought finding the impedance of z z equals the square root of x squared plus r squared and we are told the impedance x equals 400 oms and the resistance r equals 600 oms.
01:57
So with that, z equals 400 squared plus 600 squared and the square root of that.
02:27
So z in turn, z equals 721 .11 oms.
02:45
And that's our answer for part a.
02:54
Part b is asking for the six, the answers for the six trigonomic functions of our phase angle here...