If an observer on earth views polaris on the horizon the observer is located at the

Equator. Because the altitude of Polaris matches the degrees of latitude

equator (0°)

Explanation:

The Polaris is a north star and is located in the above the zenith and is a part of the brightest constellation and the distance is about the 433 light-years and is located near the north celestial pole and it needs a clear latitude to view this star is thus viewed from the equator and would appear slightly right side. And this star disappears in the southern hemisphere.

Explanation:

We can determine each parameter by using the first method of Zeigler Nichols

For this process;

the initial state of the output =

For calculating the gradient, we use the equation:

where.

Time constant relates to the time

∴

To find time t

Recall that:

Using the first method of Zeigler Nichols