As you know, sometimes we need some scientific calculation functions, such as sin,cos,tan,log,exp,power,etc.
But we shall fail to find these functions in the stock calculator app of our mobile phones when the app is in standard mode. :-(
If you rotate mobile screen to landscape mode, the stock calculator app will become a scientific calculator, which supports those advanced functions, soon.
It's awesome. :-)
Google Photos: https://goo.gl/photos/94PhYU7fyBt6b2hQA
Google Photos: https://goo.gl/photos/wMPmXD2HrB21HFFC9