Which one of the following is best condition for the plane ax + by + cz + d = 0 to intersect the x and y axes at equal angle
Answer & explanation
Correct answer: option 1
The plane a x + b y + c z + d = 0 intersects x and y axes at equal angles
Therefore |cos α| = |cos β|
⇒ |l| = |m|
⇒ |a| = |b|