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| PAGE: 443 | SET: Select | PROBLEM: 41 |
The slope-intercept form of a line equation is 
.
Angle between two lines :
If two non perpendicular lines have slopes 
and 
, the angle between
the two lines is 
Line 1: 
Write the equation in slope-intercept form.
Compare the line equation 
with 
.
The slope is 
.
Line 2: 
Write the equation in slope-intercept form.
Compare the line equation 
with .
The slope is 
.
The angle between the two lines is 
Substitute 
and 
in above equation.
Conversion from degrees to radians:
radians.
The angle between lines is 
or 
.
The angle between lines is 
or .
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