Making a positive number show negative on a graph is something you can do in just a few quick moments of your time. Make a positive number show negative on a graph with help from a longtime mathematics educator in this free video clip.

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Making a positive number show negative on a graph is something you can do in just a few quick moments of your time. Make a positive number show negative on a graph with help from a longtime mathematics educator in this free video clip.

Part of the Video Series: College Math

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Hi, I'm Jimmy Chang and we're here to discuss how to make positive numbers show negative on a graph. Now, generally, this is one of those mathematically awkward situations. But what you can do is, make a case in some areas to have a positive number show negative on a graph. And one area that you can show this in, is in the area of trigonometry, at least in a sense. When you're rotating angles for example, let's just say, you want to rotate 300 degrees. Suppose you're rotating 300 degree angle. Now, you can express that as a quote-unquote negative number, but if you're rotating in the other direction. What you're really doing is, you're creating two angles with the same terminal position. But it doesn't necessarily mean that they're necessarily equal, they're just ending up in the same spot. So, for example, 300 degrees, the terminal position ends here. What you can also do is, make the connection. that if you rotate in a negative way, this is negative 60 degrees. Now, 300 degrees and negative 60 degrees have the same terminal position, even though they'r not technically considered the same angle. But that's one way that you can make a positive number, quote-unquote, turn into a negative number. So, I'm Jimmy Chang, and that's a brief illustration on how to make a positive number show negative on a graph.