- #1
pyroknife
- 613
- 4
This is just an example
X=-20cos(t)
y=cos(t-45deg)
X has to be positive so X=-20cos(t±180deg)
I know you want the angle ^ to be the smallest magnitude, but for this case both would give you a magnitude of 180 deg.
So which one would you pick X=20cos(t-180deg) or X=20cos(t+180deg)?
This would change the answer of whether X or Y was leading.
Someone told me you should pick the angle that makes a phase difference that is <180deg.
So in this case it would be X=20cos(t-180deg) since that would give a phase difference of 135 degree compared to the 180+45=225deg phase difference if we picked the positive.
Is that right?
X=-20cos(t)
y=cos(t-45deg)
X has to be positive so X=-20cos(t±180deg)
I know you want the angle ^ to be the smallest magnitude, but for this case both would give you a magnitude of 180 deg.
So which one would you pick X=20cos(t-180deg) or X=20cos(t+180deg)?
This would change the answer of whether X or Y was leading.
Someone told me you should pick the angle that makes a phase difference that is <180deg.
So in this case it would be X=20cos(t-180deg) since that would give a phase difference of 135 degree compared to the 180+45=225deg phase difference if we picked the positive.
Is that right?
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