cos 0 = -cosπ sin 0 = sinπ MATRIX Row X Column x mxn CALCULATOR TECHNIQUE PRODUCT OF TWO MATRICES COLUMN X ROW x mxn pxn DIVISION OF MATRICES MODE 6 AC SHIFT 4 A AND B 1 SHIFT 4 3 MAT A ARE 4 1 DIM MAT A + MATRICES VALUES 2 MAT B SHIFT 4 𝑨 −𝟏 = 𝑨𝑩 4 4 MAT B 𝑩 𝑩 IS CALLED AC MATA+MATB WHERE THE INVERSE MATRIX OF B EQUALS −𝟏