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vuphong0707


a.$\alpha = \frac{121\pi}{3}$
b.$\alpha = \frac{-49\pi}{4}$
c.$\alpha = \frac{571\pi}{4}$
d.$\alpha = \frac{-389\pi}{4}$
b.$\alpha = \frac{-49\pi}{4}$
c.$\alpha = \frac{571\pi}{4}$
d.$\alpha = \frac{-389\pi}{4}$