Question 28 on this pictured math sheet please. Have a great day!

A rectangular array of numbers arranged in horizontal and vertical lines enclosed between round or square brackets is called a matrix.

Types of Matrix

According to order of matrix or value of elements,we can classify the matrices. some of the types of matrices are as follows:

A matrix having only one column is called a column Matrix.

A matrix having only one row is called row matrix.

A matrix having the numbers of rows equal to the numbers of column is called the square matrix.

A matrix having the number of rows not equal to the number of column of a matrix is called the rectangular matrix.

A matrix of any order in which each element is zero is called the null matrix( zero matrix).

A square matrix in which all the elements of leading diagonal are non-zero and the rest of the elements are zero is called a diagonal matrix.

A diagonal matrix in which all the elements of leading diagonal are 1(unit) is called unit matrix.

A diagonal matrix in which all the element of leading diagonal are equal is called scalar matrix.

A square matrix having all the elements below the diagonal and above the diagonal zero is called triangular matrix.

A square matrix is called a symmetric matrix, if it's

(i,j) th element is equal to its (j,i) th elemnent.

A square matrix B=b ij is called a skew- symmetric matrix if it's (i,j) th element is negative of its ( j, i) th element.

Two matrices are said to be equal if they have same order and corresponding elemnents of both matrices are equal.

Hope this helps..

Good luck on your assignment...

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation: