55 Secret Features of Things We Use Everyday That We Only Learned Recently

This secret feature is pretty cool. You probably already know about this feature if you’re a diehard math fan. If you’re not, listen up! If you open the calculator app and turn your phone screen sideways, it converts to a full-blown scientific calculator. How cool is that?

You can use this mode to find sine, cosine, and tangent. You can also do square root and fraction calculations if you want to get fancy. Even if you never need to use these fancy mathematic features, it’s nice to know they exist in our pockets if we ever need them.