Quiz (Trigonometric Equations)

Show all work and justify each step.

(1) Find the solutions of the following equations that are in the interval [0,2 ).

    (a)
    
    (b)
    
    (c)
    
    (d)
    
    (e)

(2) Shown below is the graph of for Using calculus, it can be shown that the -coordinates of the turning points on the graph are solutions to the equation Determine the coordinates of these points.