Question
If the lines 
are prependicular, then find the value of k.
Solution
The given lines are
and
Direction ratios of two lines are – 3, 2k, 2 and 3 k, 1, –5
Since the lines are perpendicular
and
Direction ratios of two lines are – 3, 2k, 2 and 3 k, 1, –5
Since the lines are perpendicular
