SOLVED:A triangular matrix is a square matrix with all zero entries either above or below its main diagonal. Such a matrix is upper triangular when it has all zeros below the main diagonal and lower triangular when it has all zeros above the main diagonal. A diagonal matrix is both upper and lower triangular. To find the determinant of a triangular matrix of any dimension, simply find the product of the entries on the main diagonal.State whether the matrix is upper triangular, lower triangular,