(a) Which of the following figures represents a graphical solution to the equation ?

A   B
C   D

(b) What is the period of the tangent function? .

(c) How many initial solutions are on each repeated segment? .

(d) Note that the cosine function has period and usually has two solutions on each repeated segment when solving an equation such as . Compare this with your answers to the previous two questions. How will these differences affect the process of solving the equation ?

(e) Find all solutions to .


where the initial solution is between and , and is any integer. Use radian measure and enter your answers using at least four significant digits.