Answer:
a
Explanation:
12tan(2pi/5x)= 12(sqrt 3)
tan(2pi/5x)= sqrt 3
2pi/5x = pi/3, 4pi/3, 7pi/3, 10pi/3
x = 5/6, 20/6, 35/6, 50/6
x = 5/6, 10/3, 35/6, 25/3
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