the graph of a trigonometric function intersects its midline at
(
−
1
2
π
,
3.3
)
(−
2
1

π,3.3)left parenthesis, minus, start fraction, 1, divided by, 2, end fraction, pi, comma, 3, point, 3, right parenthesis and it has a maximum point at
(
−
2
π
,
9.8
)
(−2π,9.8)left parenthesis, minus, 2, pi, comma, 9, point, 8, right parenthesis.
What is the period of the function?