Question 1015189
Graph the function in the interval from 0 to 2pi. Then evaluate the function at t = pi/4 and t = pi/2. 
y = 2 tan t
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Pick values for t and find y.
eg
t = 0, y = 0
t = 0.1, y = 0.2
t = 0.2, y = 0.4
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Plot the points.
Draw a curve thru them.