Question

Write down a parametric form of the circle centered at (????1; 2) with radius 3. indicate the parameter interval that you used.

Answer 1

Parametric form of a circle is x = h + r cos t, y = k + r sin t  where (h , k) is  coordinates of the center of the circle. r is the radius 

so for this circle the equations are 
x = 1 + 3 cos t  and y = 2 + sin t