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1. |
Sine wave A has a positive-going zero crossing at 45°. Sine wave B has a positive-going zero crossing at 60°. Which of the following statements is true?%! |
A. | Wave A leads wave B by 15° |
B. | Wave A lags wave B by 15° |
C. | Wave A leads wave B by 105° |
D. | Wave A lags wave B by 105° |
Answer» B. Wave A lags wave B by 15¬¨‚àû | |