The scalar product of the vector `hati+hatj+hatk` with a unit vedctor along the sum of the
Channel: Doubtnut
Date: 05/04/2020

The scalar product of the vector `hati+hatj+hatk` with a unit vedctor along the sum of the vectors `2hati+4hatj-5hatk and lamda hati+2hatj+3hatk` is equal to one. Find the value of `````lamda`.