It is now easy to come up with curves of various trigonometric functions such as the sine and cosine. While this might seem a little bit hard on many, reading this article will guide you on how to make a cosine curve in excel.

Here is the step-by-step guide on how you can make a cosine graph in excel;

**Step 1:** Create your data in excel like the one in figure 1 below. Use the COS function to find the cosine in radians as shown;

*Figure 1: How to make a cosine graph*

**Step 2**: Create a chart

Head to the menu bar and choose “**Insert**”. After that, choose one of the scatter models.

Choose a scatter model that will bring out the points in figure 1 above. This will look as the one below;

*Figure 2: A complete cosine graph in excel*

The cosine graph will appear as the one in figure 2 above.