Y=Acos(p)+m, A=amplitude, p=period, m=midline, in this case:
A=1/2, p=360(t/12)=30t, m=(10-9)/2+9=9.5 so
h(t)=(1/2)cos(30t)+9.5
Solve for x by cross multiplying and the answer is x=6
hope this helps and plz rate below :)
Answer:
d
Step-by-step explanation:
