Find the Reference Number and the Terminal Point $P ( x , y )$

Q52: Sketch the graph of <span

Q53: Find the value of <span

Q54: Sketch the graph of <span

Q55: Find the value of <span

Q56: Find a function that models the simple

Q58: Find a function that models the

Q59: Sketch the graph of <span

Q60: Find the approximate value of

Q61: Find all solutions of the equation

Q62: Find the exact value of