A line segment with endpoints at #(-1 , -9)# and #(3, -5 )# is rotated clockwise by #pi/2#. What are the new endpoints of the line segment?
1 Answer
Jun 24, 2016
Explanation:
I am assuming this a rotation about the origin.
Under a clockwise rotation about the origin of
#pi/2# a point (x ,y) → (y ,-x)
hence (-1 ,-9) → (-9 ,1) and (3 ,-5) → (-5 ,-3)