From a point `P(lambda, lambda, lambda)`, perpendicular PQ and PR are drawn
Channel: Doubtnut
Date: 24/05/2020

From a point `P(lambda, lambda, lambda)`, perpendicular PQ and PR are drawn respectively on the lines `y=x, z=1 and y=-x, z=-1`. If P is such tthat `angleQPR` is a right angle , then the possible value(s) of `lambda` is (are)