In this lesson, we will learn how to determine whether a matrix is orthogonal and how to find its inverse if it is.
Q1:
Is the matrix 𝐴=131−222−1−2221 orthogonal?
Q2:
Is the given matrix orthogonal? 𝐴=𝜃𝜃−𝜃𝜃cossinsincos
Q3:
Is the matrix 𝐴=122212221 orthogonal?
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