Mathematical Based C Programs

For any mathematical operation, a pre-defined library is present for difficult operations like finding 

• Square ( x*x ) ,
• Roots ( x^(1/2) ),
• Sine ( sinΘ ),
• Cosine ( cosΘ ),
• Tangent ( tanΘ ), 
• Exponential ( e ), 
• Power ( x^n ), etc.

the library is <math.h>, this is also a header file, all the functions in this library take double as argument and return double as the result.