This webpage checks how well you understand cotangent curves, i.e. graphs of the trigonometric equation y = a*cot(x+c). The value of a is called the amplitude and c is the phase angle. Below is a graph for specific values of a, c. Your aim is to find these values and plot the graph of the same function.
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For another example click When you are done, you can print this page (in landscape mode). 
