Published by:
CGP EDU Academic Team
Published on: August 12, 2026
Let the angle 
between two unit vectors 
and 
be 
. If the vector 
, then the value of 
is
Text Solution
Verified by ExpertsThe correct answer is:
B
To solve the problem, we begin by examining the vector 
.
Let's calculate:
We need to find the value of 
Substituting the expressions, we get:
Therefore,
Simplifying,
Given 
, and knowing that for unit vectors 
, we use the identity
Thus, 
.
Substitute back into the equation:
Therefore, the value is 29.
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