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Mathematics
Mathematics
Problem
If
z
=
i
log
e
(
2
−
3
)
z = i \log_e (2 - \sqrt{3})
z
=
i
lo
g
e
(
2
−
3
)
, where
i
=
−
1
i = \sqrt{-1}
i
=
−
1
, then the
cos
z
\cos z
cos
z
is equal to a.
i
i
i
b.
2
i
2i
2
i
c. 1 d. 2
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