How to Graph the Cosine Function?
A step-by-step guide to graph the cosine function From the graph, we can know how \(x\) and \(y\) change: By increasing \(x\) from \(0\) to \(\frac{\pi}{2}\), \(y\) decreases from \(1\) to \(0\). By increasing \(x\) from \(\frac{\pi}{2}\) to \(\pi\), \(y\) decreases from \(0\) to \(-1\). By increasing \(x\) from \(\pi\) to \(\frac {3\pi}{2}\),\(y\) increases from \(-1\) to […]