# A line segment with endpoints at #(1 , -2 )# and #(1, -4 )# is rotated clockwise by #pi/2#. What are the new endpoints of the line segment?

##### 1 Answer

Nov 20, 2016

#### Explanation:

I am assuming a rotation about the origin.

Under a clockwise rotation about the origin of

#pi/2#

#"a point " (x,y)to(y,-x)#

#rArr(1,-2)to(-2,-1)# and

# (1,-4)to(-4,-1)#