Get just the scaling transformation out of CGAffineTransform

Question

I found a similar question about getting just the rotation, but as I understand scaling and rotating work different in the transform matrix.

Matrixes are not my strength

Answer 1

- (CGFloat)xscale {
    CGAffineTransform t = self.transform;
    return sqrt(t.a * t.a + t.c * t.c);
}

- (CGFloat)yscale {
    CGAffineTransform t = self.transform;
    return sqrt(t.b * t.b + t.d * t.d);
}