Answer:
The minimum height of the flag is 9 feet.
Step-by-step explanation:
The function representing the height of the flag is given by,
It is required to find the minimum height of the flag.
As, we know,
<em>The function have values between [-1,1] for all values of t.</em>
So, have values between [-1,1] for all values of t.
Then, have values between [-3,3] for all values of t.
Thus, have values between [-3+12,3+12] for all values of t.
<em>That is, have values between [9,15] for all values of t.</em>
Hence, the minimum height of the flag is 9 feet.