Calculator app on Galaxy Fame

Calculator is a basic functionality that a smartphone should have, when i first look at the calculator app on samsung galaxy fame i was dissapointet because it's not a scientific calculator.

I thought it was just a basic calculator, but i was wrong...it is a scientific calculator, all i have to do is turn the phone to landscape position and more options shows up.

This is what the calculator app looks like on portrait position :

And here's the calculator app on landscape position :

 
Now i can do more with it, now i can calculate sin, cos, tan, log, square root, etc.