Equation of Straight Line Inclined at Sixty Degrees
A straight line through the point is inclined at an angle to the line . If also intersects the -axis, then the equation of is
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Topics & Concepts
Step-by-Step Solution
To find the equation of the straight line , we first determine the slope of the given line:
The slope of this line is .
Thus, its angle of inclination with the positive direction of the -axis is:
The line is inclined at an angle of to the given line. Therefore, the angle of inclination of line can be:
This gives two possible inclinations for :
Case 1: If :
The slope of line is .
The equation of the line passing through with slope is:
This line is parallel to the -axis and hence does not intersect the -axis. Since the problem explicitly states that intersects the -axis, this case is rejected.
Case 2: If :
The slope of line is .
The equation of the line passing through with slope is:
This line intersects the -axis, satisfying all conditions.
Therefore, the correct option is (B).