Sin 60^\circ has the same value as I. Sin 120^\circ II. cos 240^\circ III. -sin 150^\circ IV. cos 210^\circ V. sin 240^\circ
A
I only
B
II only
C
IV only
D
III only
E
IV and V only
Verified Correct Answer: A.
Step-by-Step Mathematical Solution
In the second quadrant, \(\sin 120 = \sin (180 - 120)\)
= \(\sin 60\)
Source: Myschool Past Questions Archive (Record #23167)