Mathematics, 10.11.2020 19:20 haileywatkins

Astronomers have observed that sunspots vary sinusoidally. The variation is from a minimum of about 10 sunspots per
year to a maximum of about 120 per year. A cycle lasts
about 11 years. If a minimum occurred in 1964, which
function could model the number of sunspots, S, as a
function of the year, t?
O
S(t) = -55 cos
21
(t - 1964) + 65
11
O
S(t) = -65 cos
21
-- 1964
11
+ 55
S(t) = -55 cos
21
1 - 1964
11
+ 65
O
S(I) = -65 cos
210
(t - 1964)
11
1964)) +
+ 55

Answers: 3

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Astronomers have observed that sunspots vary sinusoidally. The variation is from a minimum of about...