Respuesta :

Correct answers are a) and d)

[tex]\alpha=- \frac{\pi}{4} [/tex]

Coterminal angles: [tex]\alpha+k\pi,\,k\in Z[/tex]

[tex]- \frac{\pi}{4}+2\pi=- \frac{\pi}{4}+ \frac{8\pi}{4} = \frac{7\pi}{4} \\ \\- \frac{\pi}{4}-2\pi=- \frac{\pi}{4}- \frac{8\pi}{4} = -\frac{9\pi}{4}[/tex]

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