The power transfer in long transmission lines is limited by:
1
the magnitude of the voltages at the two ends, the reactance between the two ends and the sine of the angle between the two voltages
2
the magnitude of the voltages at the two ends and the sine of the angle between the two voltages
3
the magnitude of the voltages at the two ends, the reactance between the two ends and the cosine of the angle between the two voltages
4
the magnitude of the voltages at the two ends and the cosine of the angle between the two voltages