If `veca=5hati-hatj+7hatk and vecb=hati-hatj+lamda hatk, find lamda ` such that `veca+vecb
Channel: Doubtnut
Date: 05/04/2020

If `veca=5hati-hatj+7hatk and vecb=hati-hatj+lamda hatk, find lamda ` such that `veca+vecb and veca-vecb` are orthogonal