-369°+ 360° = -9°. This is in Quadrant IV. If you want a reference angle in Quadrant I, find the positive angle between 0 and 360° that has the same terminal point at does -9°. It is 360° - 9° = 351°
Because when you add 0.523+2.36, the decimal points line up together. Which make it 2.883. The student's mistake was that they didn't line the decimal points together.
Step-by-step explanation: for the case of (X) you only need to pass the 7i to the other side with the subtraction sign (-7i), then we get this equation:
x + 7i = y − yi
X = y - yi - 7i
in the case of the (Y), first we select the common multiple.
y - yi = y(1 - i)
if we replace it in the original expression, we get the following equation:
x + 7i = y(1 - i)
after that you can pass the value (1 - i) to the other side dividing,
