One sine wave has a positive-going zero crossing at 15¬¨‚àû and another sine wave has a positive-going zero crossing at 55¬¨‚àû. The phase angle between the two waveforms is%!

One sine wave has a positive-going zero crossing at 15¬¨‚àû and

1.	One sine wave has a positive-going zero crossing at 15¬¨‚àû and another sine wave has a positive-going zero crossing at 55¬¨‚àû. The phase angle between the two waveforms is%!
A.	0¬¨‚àû
B.	45¬¨‚àû
C.	40¬¨‚àû
D.	None of the above
Answer» D. None of the above