C=2 4 6 3 6 9 4 8 12 find the determinant and inverse of c

The determinant of C is zero and does not have inverse.

Step-by-step explanation:

Let , since it is a matrix with 3 rows and 3 columns, we can determine its determinant by the Sarrus' rule:

Since the determinant of C is equal to zero, then we conclude that C does not have an inverse according to the following definition of inverse matrix. That is:

(1)

Where is the adjugate matrix of C, defined as the transpose of the cofactor matrix of C.

The result of this expression is undefined due to the determinant.  

hope it you

step-by-step explanation:

sin(7pi/6 - pi/3)  

= sin(7pi/6 - 2pi/6)  

= sin(5pi/6)  

= sin(pi - pi/6)  

= sin(pi/6)  

= 1/2  

sin 7pi/6 - sin pi/3  

= sin (pi + pi/6) - sin pi/3  

= -sin pi/6 - sin pi/3  

= -1/2 - sqrt(3)/2  

= -(1+sqrt(3))2

never fear papaguy is here

answer