The two graphical methods are intersection-of-graphs method f(x)=g(x) correspond to the x-coordinates of the points of intersection of the graphs of y=f(x) and y=g(x). or can use the X-Intercept method f(x)=0 are represented by the x-intercepts of the graph of y=f(x).
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Please see the attachment.
Solve for solution in the interval
Solution. Since , ...
A trigonometric function is solved on an interval. This is a well presented solution.