Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Let three vectors 
, 
, 
are called reciprocal vectors of vectors 
, 
and 
if
= 
, 
= 
, 
= 
If 
= 
, 
= 
, 
= 
then vectors may be said that they belong to self reciprocal system.
Let 
, 
& 
are three noncoplanar vectors and 
> 0, then they form right hand triad and if 
< 0, then they form left hand triad.
(i) [ 
× 
× 
× 
] = ?
Correct Answers for Comprehension Sub-Questions
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
Ans.
(i)
Sol. 
= 0
(ii)
Sol. 
= 
if 
> 0 ⇒ 
> 0
and if 
< 0 ⇒ 
< 0
(iii)
Sol. 
= 1 = cos –1 (x) ⇒ x = 0
D = 1 + 4 
> 0
⇒ given quadratic equation has always real roots.
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