Evaluate ( begin{vmatrix}-sin &-1 1&sin end{vmatrix} ).

1.	Evaluate ( begin{vmatrix}-sin &-1 1&sin end{vmatrix} ).
A.	cos<sup>2</sup> u2061
B.	-cos<sup>2</sup> u2061
C.	cos u20612
D.	cos u2061
Answer» B. -cos<sup>2</sup> u2061

Discussion

Find the value of x if ( begin{vmatrix}3&x 2&x^2 end{vmatrix} )= ( begin{vmatrix}5&3 3&2 end{vmatrix} ).
Evaluate ( begin{vmatrix} sqrt{3}& sqrt{2} -1&2 sqrt{3} end{vmatrix} ).
If A= ( begin{bmatrix}2&5&9 6&1&3 4&8&2 end{bmatrix} ), find |A|.
Evaluate ( begin{vmatrix}8x+1&2x-2 x^2-1&3x+5 end{vmatrix} ).
Evaluate ( begin{vmatrix}5&4&3 3&4&1 5&6&1 end{vmatrix} ).
Evaluate ( begin{vmatrix}1&1&-2 3&4&5 -1&2&1 end{vmatrix} ).
Evaluate ( begin{vmatrix}i&-1 -1&-i end{vmatrix} ).
Evaluate ( begin{vmatrix}-sin &-1 1&sin end{vmatrix} ).
Evaluate ( begin{vmatrix}5&-4 1& sqrt{3} end{vmatrix} ).
Evaluate ( begin{vmatrix}2&5 -1&-1 end{vmatrix} ).