ok, you did pretty well, if you did this on your own. You only got 3 things incorrect, that is on both sides you put subtract on both sides but the x should be + and the y should be -, look inside and you will understand. And 2 you put all x's on the x side and all y's on the y side, it should be one x and one y on both sides, again look inside if you didn't understand. And the last thing is it must be cos, then sin and on the y is sin, then cos
