Forum Discussion
ATAN(), ATAN2() return same value?
In below site, M365 said that ATAN2(a,b) is the same as ATAN(b/a), except that a can be zero in ATAN2. (https://support.microsoft.com/ko-kr/office/atan2-%ED%95%A8%EC%88%98-c04592ab-b9e3-4908-b42...
If you use
=ATAN( (TAN(K7)*K5+$C$2) / (K5-$C$3) )instead of
=ATAN( TAN(K7)*K5 + $C$2/(K5-$C$3) )both ATAN and ATAN2 give exactly the same result.