Simplify: (cos 3 Thita +i sin 3 thita)(cos thita- i sin thita)/(cos 5 thita- i sin 5 thita)
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Answer:
Step-by-step explanation:
cos
(
3
x
)
cos
(
x
)
cos
(
5
x
)
−
i
sin
(
5
x
)
−
i
cos
(
3
x
)
sin
(
x
)
cos
(
5
x
)
−
i
sin
(
5
x
)
+
i
sin
(
3
x
)
cos
(
x
)
cos
(
5
x
)
−
i
sin
(
5
x
)
+
sin
(
3
x
)
sin
(
x
)
cos
(
5
x
)
−
i
sin
(
5
x
)
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