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Mathematics
Mathematics
Problem
Use a unit circle diagram to find: a. a**
cos
3
π
2
\cos \frac{3\pi}{2}
cos
2
3
π
and
sin
3
π
2
\sin \frac{3\pi}{2}
sin
2
3
π
b.
b
cos
(
−
π
2
)
\cos(-\frac{\pi}{2})
cos
(
−
2
π
)
and
sin
(
−
π
2
)
\sin(-\frac{\pi}{2})
sin
(
−
2
π
)
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