4 public questions tagged with this topic.
We know that solving fully: apply relevant formula, put numbers, compute. Result comes as 90°. Easy verification shows it satisfies condition.
Ref: NCERT Mathematics Class XII — Matrices and Determinants
We can see that after simplifying, a = 1, b = 2, c = 3, d = 4 is left. The method is simple: formula → substitution → calculation → answer.
Ref: NCERT Mathematics Class XII — Matrices and Determinants
Think of it like this: complete solution: write formula, plug data, do arithmetic. Final value matches A is non-singular. Simple and accurate.
Ref: NCERT Mathematics Class XII — Matrices and Determinants
In easy words, after simplifying, 6 is left. The method is simple: formula → substitution → calculation → answer.
Ref: NCERT Mathematics Class XII — Matrices and Determinants
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