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Mathematics
Mathematics
Problem
As the tip of a windmill's blade rotates, its height above ground is given by
H
(
t
)
=
10
cos
(
π
6
t
)
+
20
H(t) = 10 \cos\left(\frac{\pi}{6}t\right) + 20
H
(
t
)
=
10
cos
(
6
π
t
)
+
20
metres, where
t
t
t
is the time in seconds.
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