$\begin{array}{l}y=r \sin \theta \\ y=6 \sin 90\end{array}$
\(\boxed{y = 6}\)
Step 1 :Convert 90 degrees to radians: \(\theta = \frac{90 \times \pi}{180} = \frac{\pi}{2}\)
Step 2 :Calculate y: \(y = 6 \times \sin(\frac{\pi}{2}) = 6\)
Step 3 :\(\boxed{y = 6}\)