Angle notation addition - numerical addition problemWatch
I've attached the problem I'm having, it is from my lecture notes, no idea how he has got the values on the denominator. I thought it was from the cosine/sine rules as I referenced this webpage initially on how to do it (though the example is a right angle, hence I used cosine/sine rules) http://www.allaboutcircuits.com/text...ctor-addition/
My problem/working is attached below. Note the triangle etc was all my working, all I have from the question is the first part, I assumed I needed to use cosine/sine rules and seems like I am wrong.
Well, your vectors are in polar coordinates. You need to convert to Cartesian, add the Cartesian coordinates, and then convert back.
1)x = 300cos(0) ; y = j300sin(0)
x = 300; y=0
2)x = 282.8cos(-45); y=j282.8sin(-45)
x= 199.97; y=-j199.97
So what from here?
(300+199.97) - j199.97
= 499.97 -j199.97
got it, now:
Thanks for the help!