Which of the following sinusoidal equations has an amplitude of 9, a period of 1080 and a maximum at (0, 1)? f(x) = 9 cos(x) – 8 ○ f(x) = 9 cos (x) + 1 Of(x) = 9 cos(x) s(૩૪) f(x) = 9 cos(3x) — 8

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