As an opportunity to respond to people who might disagree with your claim.
This is not math ? it’s physics or chem or bio or something
Given:


To find:
The obtuse angle between the given pair of straight lines.
Solution:
The slope intercept form of a line is
...(i)
where, m is slope and b is y-intercept.
The given equations are


On comparing these equations with (i), we get


Angle between two lines whose slopes are
is

Putting
and
, we get



Now,
and 
and 
and 
, so it is an obtuse angle and
, so it is an acute angle.
Therefore, the obtuse angle between the given pair of straight lines is 120°.
Answer:
4
Step-by-step explanation:
4 2/3 divided by 2 3/6 divided with a calculator as a decimal would be 1.86666666667