To determine the degree of rotation from point A(-3, 4) to point A'(-4, -3) in a counterclockwise direction, we can use the coordinates to visualize the rotation on a Cartesian plane.
1. **Find the original position of point :
- A(-3, 4) is located in the second quadrant.
2. **Find the rotated position of point A'**:
- A'(-4, -3) is located in the third quadrant.
3. **Calculate the angle of rotation**:
- You can find the angle of rotation by using the coordinates of A and A'.
- To visualize the angles, we can analyze how the points move from the first position to the second.
The original point A(-3, 4) can be compared to its rotated position A'(-4, -3):
From A(-3, 4), if we envision a circle centered at the origin (0, 0), the movement appears to follow this path:
- When rotating a point (x, y) counterclockwise by \(90^\circ\), the coordinates transform as follows:
\[
(x, y) \rightarrow (-y, x)
\]
Using this rule:
- \(A(-3, 4)\):
- After a \(90^\circ\) counterclockwise rotation, it becomes \(A'(-4, -3)\), which matches A'.
Thus, the degree of rotation from A to A' is \(90^\circ\) counterclockwise.