Answer:
Given:
The system of linear equations in matrix form may be written as:
AX=B,
where,
A is coefficient matrix of order and is given by:
A =
X is variable matrix of order and is given by:
X=
and B is the contant matrix of order and is given by:
B =
Now, AX=B
. =
Cos(x+90)=> -sinx
Cos90=sin