Answer:
8r and -4r
3s and -3s
second andd fourth answer
Answer:
Option B is correct
the degree of rotation is, 
Step-by-step explanation:
A rotation matrix is a matrix that is used to perform a rotation in Euclidean space.
To find the degree of rotation using a standard rotation matrix i.e,

Given the matrix: 
Now, equate the given matrix with standard matrix we have;
= 
On comparing we get;
and
As,we know:

we get;

and

we get;

Therefore, the degree of rotation is, 
Answer:
1. 4x(2x-3)
2. (2x-3)^2
hope this helps!!:)
Step-by-step explanation: