Question: Please explain what is involution in the following: An n x n matrix A is said to be an involution if A2 = 1. Show

Please explain what is involution in the following:

Please explain what is involution in the following: An n x n

An n x n matrix A is said to be an involution if A2 = 1. Show that if G is any matrix of the form G cos 0 sin 0 sin 0 - cos 0 then G is an involution

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