Sketch the graph of the curve whose equation in polar coordinates is \(r=3\cos 3\theta\text{.}\) Sketch the curve whose polar equation is \(r=-1+\cos \theta\text{,}\) indicating any symmetries. Mark ...

In Cartesian coordinates, the x and y-direction stay constant. So let's give this thing an initial velocity in the θ direction with a magnitude of 600 m/s. That should be enough.

It introduces the systems of both Cartesian and polar coordinates and describes how Cartesian axes are used on a CNC lathe. The class describes both how coordinates are used on blueprints and how they ...

Take apart a few old DVD drives, stitch them together with cable ties, add a pen and paper, and you’ve got a simple CNC plotter. They’re quick and easy projects that are fun, but they d… ...