math functions

by John Kiran

HTML

<p id="para">
  
</p>

JavaScript

let para=document.getElementById("para");
//ceil+floor
para.innerHTML+="Math.round(4.2):  "+Math.round(4.2)+"<br>";	
//to nearest bigger number
para.innerHTML+="Math.ceil(4.2):  "+Math.ceil(4.2)+"<br>";		
//to nearest smaller number
para.innerHTML+="Math.floor(4.7):  "+Math.floor(4.7)+"<br>";	

//2^3
para.innerHTML+="Math.pow(2,3):  "+Math.pow(2,3)+"<br>";

//square root of 64
para.innerHTML+="Math.sqrt(64):  "+Math.sqrt(64)+"<br>";

//absolute means positive value
para.innerHTML+="Math.abs(-4.7):  "+Math.abs(-4.7)+"<br>";

//sin function 
para.innerHTML+="Math.sin(90 * Math.PI / 180):  "+Math.sin(90 * Math.PI / 180)+"<br>";

//trunc returns integer part of a number
para.innerHTML+="Math.trunc(-4.7):  "+Math.trunc(-4.7)+"<br>";