Find the point$(s)of$ intersection $of$ the curves $r=1$ and $r=2cos.$

$a.(1,\frac{}{6}),(1,-\frac{}{6})$

$b.(1,\frac{}{4}),(1,-\frac{}{4})$

$c.(1,\frac{}{3}),(1,-\frac{}{3})$

$d.(1,\frac{}{6})$

$e.(1,\frac{}{3})$