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A disk can rotate about its central axis
Which of the following pairs of initial (1) and final (2) angular positions give a negative angular displacement?
theta=theta₂-theta₁

a. theta₁=-3rad,theta₂=4rad
b. theta₁=1rad,theta₂=4rad
c. theta₁=-1rad,theta₂=1rad
d. theta₁=3rad,theta₂=1rad
e. theta₁=-4rad,theta₂=-2rad