Trigonometry and Complex Numbers with Series
35940
Polar form of the sum of complex numbers $\operatorname{cis} 75 + \operatorname{cis} 83 + \ldots+ \operatorname{cis} 147$
64076
how to show that this complex series converge?
17168
Find the value of $\sin\frac{2\pi}{7}+\sin\frac{4\pi}{7}+\sin\frac{8\pi}{7}$
95979
Trigonometry and algebra question
55302
Rational values of trigonometric functions
84826
Evaluating $\int_0^{2 \pi} e^{\cos x} \cos (nx - \sin x) \,dx$ using complex analysis
35473
How to analyze the following complex number?
34709
Complex numbers - roots of unity
30480
Continued product in $\sin$ series
5642
Geometry with Trigonometry
33569
Use polar complex numbers to find multiplicative inverse
6634
Evaluate trigonometric function
34590
Fourier series of Log sine and Log cos
112348
Defining the Complex numbers
39243
Plotting complex numbers
34049
How can I understand and prove the "sum and difference formulas" in trigonometry?
115057
Relationship between complex number and vectors