If a= i + lambda j + k and b=i+j+k and |a + 6| = |a| + |b| then the
value of lambda is?​

1 thought on “If a= i + lambda j + k and b=i+j+k and |a + 6| = |a| + |b| then the<br />value of lambda is?​”

1. Step-by-step explanation:

   a

   =2

   i

   ^

   +λ

   j

   ^

   +

   k

   ^

   b

   =−

   i

   ^

   +2

   j

   ^

   −3

   k

   ^

   are orthogonal.

   a

   .

   b

   =0

   −2+2λ−3=0

   2λ=5

   λ=

   2

   5

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