math note note that the floor and int functions behave the same for positive numbersbut differently for negative numbers for instancefloor( and int( both return the integer howeverfloor(- returns - the greatest integer less than or equal to - while int(- returns - which is obtained by throwing away the decimal part of the number atan the atan function is useful for telling the angle between two points let and be the distances between the points in the and directions the tangent of the angle in the picture below is given by / then arctany/xgives the angle itself but if the angle were this would not work as would be we would also need special cases to handle when and when the atan function handles all of this doing atan ( ,xwill return arctany/xwith all of the cases handled properly the atan function returns the result in radians if you would like degreesdo the followingangle math degrees(atan ( , )the resulting angle from atan is between - and (- and if you would like it between and do the followingangle math degrees(atan ( , )angle (angle+ scientific notation look at the following code ** + the resulting value is displayed in scientific notation it is the + stands for here is another example ** - this is -