Sketch the Curve of the Vector Function $\mathbf { r } ( t ) = 5 \sin t \mathbf { i } + 4 \cos t \mathbf { j }$

Essay

Sketch the curve of the vector function $\mathbf { r } ( t ) = 5 \sin t \mathbf { i } + 4 \cos t \mathbf { j }$ , and indicate the orientation of the curve.