I am having a lot of trouble transforming the graphs of sin, cos, tan, csc, sec, and cot. I\'m doing OK with sin and cos without a horizontal and vertical shift. I understand amplitude as well. I\'m just having the trouble mainly when phase shift and vertical shift are thrown in as well. Solution please extend what you have understood to this general equation y=Asec(Bx+c)+D period = 2pi/B phase shift is =C/B Vertical shift=D.