If A is an orthogonal matrix, then |A| is
In easy words, using formula we get +1. Calculation gives this directly, check steps: apply rule, substitute values, simplify to get +1.
Ref: NCERT Mathematics Class XII — Matrices and Determinants
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A square matrix A is called orthogonal if_______ where A’ is the transpose of A.
Let's break it down: orthogonal definition: Aᵀ=A⁻¹. Then AAᵀ=I and AᵀA=I. Complete solution: transpose equals inverse preserves length.
Ref: NCERT Mathematics Class XII — Matrices and Determinants
