Express the polar equation \(r=\cos 2\theta\) in rectangular coordinates. Find the maximum height above the \(x\)-axis of the cardioid \(r=1+\cos \theta\text{.}\) Sketch the graph of the curve whose ...

This application note presents space vector control or field-oriented control (FOC) using polar coordinates. It is used for controlling 3-phase alternating current induction motors (ACIM). The ...

In an unusual phenomenon, NASA's longest-running aerial survey of polar ice has spotted very sharp-angled, tabular iceberg floating among the sea ice. The rectangular iceberg, NSA says, appeared to ...

This past week, an aerial photo of an iceberg as flat, square and smooth as a sheet cake set the internet aflame with rumors of alien visitors and chainsaw-wielding glaciologists. The picture was ...

The giant block, known as a tabular berg, was captured off the east coast of the Antarctic Peninsula, near the Larsen C ice shelf NASA has discovered an incredible mile long, perfectly rectangular ...