1. find the inverse of the following matrices a 3 0 2 -1

Step-by-step explanation:

Given is a 2x2 square matrix A as

|A|=6

Cofactors are

adj matrix =

Hence Inverse of A

=

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