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The height, h, in feet of the tip of the minute hand of a wall clock as a function of time, t, in minutes can be modeled by the equation h = 0.75 cosine (StartFraction pi Over 30 EndFraction (t minus 15)) + 8. Which number (from 1 to 12) is the minute hand pointing to at t = 0?
3
6
9
12
Sagot :
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