1. The problem statement, all variables and given/known data Find the phase angle between i1 = -4 sin (377t + 25) and i2 = 5 cos (377t - 40) 3. The attempt at a solution I first made i2 in terms of sine: 5 cos (377t - 40) => -5 sin (377t + 50) => 5 sin (377t + 230) Now to make i1 positive as well: -4 sin (377t + 25) => 4 sin (377t + 205) Comparing these two now, i2 leads i1 by 25 degrees. Although the answer in the lecture notes say i1 leads i2 by 155. What has gone wrong here?