equation of lines which intersect another line at given angle.
1945
Equations of the two lines through the origin which intersect the line $\frac{x-3}{2}=\frac{y-3}{1}=\frac{z}{1}$ at an angle of $\frac{\pi}{3}$
70548
Equation of straight line with given points
130371
Two Rectangles intersection
63802
Parametric Equation of a Circle Using a Line
71229
Intersection of two parabolae
114162
Draw a Line Between Two Points described by Trigonometric Calculations
111815
Determine angle $x$ using only elementary geometry
2518
TikZ: Intersection of two lines
116815
Angle between two circles
79292
How to calculate the intersection of two planes?
112664
Find the equation of a plane containing a point and passing through a line
142862
Intersection of an ellipsoid and plane in parametric form
147467
Angle between 2 points
143101
Find the slope of a line given a point and an angle
116223
Show that the angles satisfy $x+y=z$
87850
How can I find the points at which two circles intersect?
34428
Find equation of a plane throw two given point and orthogonal to another space