CODEWITHSUNDEEP
excelexcel-formulajavascript
Hemant Metalia
Hemant Metalia

Reputation: 30638

atan2 function behaves different in javascript and excellsheet

I am trying the atan2 Math Function but i am getting wrong value in google excel sheet. but getting correct value in javascript atan2 function. How can i get that value in excelsheet ?

my value in excel is 

atan2(8.6,2.7699)=0.3115

while in javascript is 

atan2(8.6,2.7699)=1.259206466337312

I have checked javascript value here http://www.univie.ac.at/moe/rechner/rechner.html

can any one say why this happens ?

if i want this value in excel then what formula should i use ?

Upvotes: 7

Views: 5093

Answers (3)

Charles Williams
Charles Williams

Reputation: 23505

Excel's ATAN2 requires the x-coordinate followed by the y coordinate ATAN2(x,y) but JavaScript ATAN2 has the arguments reversed : ATAN2(y,x)

Upvotes: 1

Shawn Chin
Shawn Chin

Reputation: 86844

The function signature for atan2 in Excel is ATAN2(x_num, y_num) while in Javascript it's Math.atan2(y,x). Note the order of arguments.

They should both give your roughly the same answer if you provide the arguments in the appropriate order.

Upvotes: 6

chucktator
chucktator

Reputation: 1856

In Microsoft Excel the atan2 function takes the parameters in reverse order and Google Docs does the same thing for consistency. If you flip the parameters in javascript you get the same "wrong" value.

Upvotes: 17

Related Questions