To derive: The formula of angle between two lines
Answer to Problem 98E
Explanation of Solution
Given: The equation of two lines in the given figure
Assume that both lines have positive slopes.
Let the angle of line
Let the angle of line
According to given figure,
Let the angle of line
Applying tan both sides
The given equation of line
Substituting the value
Hence, the angle between the given line is
Chapter 5 Solutions
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