Trig
posted by Mars .
Find the reference number and the terminal point determined by t.
a. t =  7(pi)/6

t = 7(pi)/6.
7(pi)/6 * 180/(pi) = 210 deg.
210 is 210 deg CW from the + xaxis
and is in the 2nd quadrant.
Ar = [210]  180,
Ar = 210  180 = 30 deg.
A = 180  30 = 150 DEG CW FROM +X AXIS.
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