The curves are and
.
Graph the curves and
.
Observe the graph:
\The curves intersect on interval .
Find the intersection points by equating the two curves.
\Sine function is positive in first and second quadrant.
\.
Substitute in
.
.
Substitute in
.
.
The points of intersection are and
.
Both curves passes through the pole, so pole is also a point of intersection.
\At the pole: .
.
.
The points of intersection are ,
and the pole.