5 The parametric equations of a curve are
$$x = 2 \cos 2 \theta + 3 \sin \theta , \quad y = 3 \cos \theta$$
for \(0 < \theta < \frac { 1 } { 2 } \pi\).
- Find the gradient of the curve at the point for which \(\theta = 1\) radian.
- Find the value of \(\sin \theta\) at the point on the curve where the tangent is parallel to the \(y\)-axis.