Question
Question: The value of \(\cos 9\theta - i\sin 9\theta\) is....
The value of cos9θ−isin9θ is.
A
0
B
27
C
26
D
None of these
Answer
0
Explanation
Solution
q
p1/3=−q1/3(1)1/3.α=−q1/3.
The value of cos9θ−isin9θ is.
0
27
26
None of these
0
q
p1/3=−q1/3(1)1/3.α=−q1/3.