Hello : note : <span> <span>an equation of the circle Center at the
A(a,b) and ridus : r is :
(x-a)² +(y-b)² = r² </span></span>in this exercice : a =0 b = 0 r =8 <span>the equation of the circle is : x²+y² = 64</span>
You need to include a picture or add more o the question because I can't solve it without the rest of the problem. All I know is 60 degrees and 18. But what is the 18?