# Making math easier for Palo Alto students!

## Do we really need Pi in trigonometry?

Do geometry and trigonometry confuse you? Perhaps you should blame pi, the universal unit of radians, the basis of trigonometry that many students dread. But it doesn’t have to be that way! Math can be fun and intuitive, if you think about radians in terms of tau.

Vi Hart, a Youtuber devoted to math, argues that perhaps math would make more sense if we used Tau, which is 2*Pi, or 6.28. Vi actually bakes a pie, and then defines the pie as having a circumference of two pi radians, which doesn’t seem to make sense. After all, shouldn’t a pie have a circumference of one pi? Vi uses a different mathematical constant, Tau, that represents the entire circumference of one pie. She uses tau in a variety of mathematical contexts, showing how one can make a sine graph exclusively with tau, and calculate various simple trig problems using tau.

This video shows us that there is an alternative that can simplify seemingly tricky math! However, as confusing as pi can be, it’s necessary to learn the current properties in order to master the mathematical conventions. Vi’s video shows that math can be interactive, fun, and thought-provoking. Many students at Mathnasium and schools around Palo Alto and Menlo Park tend to get frustrated by this seemingly arbitrary unit of trig. If you want to grasp a deeper understanding of pi and its place in trig, view Vi’s video on youtube!

For more fun ways to learn math, visit Mathnasium of Palo Alto-Menlo Park.