Question

Using the polar form of $1 + i$ and $\sqrt3 + i$ to deduce $\cos (\frac{\pi}{12}), \sin(\frac{\pi}{12})$

score 1.3k · Answer 1 · 2014-03-20 13:54:14

1.3k

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Using the polar form of $1 + i$ and $\sqrt3 + i$ to deduce $\cos (\frac{\pi}{12}), \sin(\frac{\pi}{12})$

Published on 20 Mar 2014 - 13:54

score 88 · Answer 2 · 2026-04-11 18:55:31

88

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What happens if to postulate that complex numbers whose argument differs by $2 \pi$ are not equal?

Published on 11 Apr 2026 - 18:55

score 129 · Answer 3 · 2026-04-11 17:31:47

129

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Product of $1-\operatorname{cis}(2k\pi/n)$

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score 473 · Answer 4 · 2026-04-11 16:23:40

473

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Cauchy's Theorem and Cauchy's formula

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score 595 · Answer 5 · 2026-04-12 10:00:30

595

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score 2.2k · Answer 6 · 2014-03-21 16:04:24

2.2k

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Published on 21 Mar 2014 - 16:04

score 102 · Answer 7 · 2026-04-11 10:00:11

102

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80

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1.7k

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152.1k

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155

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score 4.6k · Answer 12 · 2026-04-12 02:15:55

4.6k

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138

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467

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score 1.7k · Answer 15 · 2026-04-11 11:39:29

1.7k

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List Question

Using the polar form of $1 + i$ and $\sqrt3 + i$ to deduce $\cos (\frac{\pi}{12}), \sin(\frac{\pi}{12})$

What happens if to postulate that complex numbers whose argument differs by $2 \pi$ are not equal?

Product of $1-\operatorname{cis}(2k\pi/n)$

Cauchy's Theorem and Cauchy's formula

Example of holomorphic function from unit disc to itself

Prove there is no complex z such that $|z|=|z + i\sqrt5| = 1$

Convergence of complex power series question

proving a limit of a function by definition

How to solve quadratic function with degree higher than two?

Absolute value of complex exponential

showing that $(z_1^2z_2)^2$ is a real number

Compute the square root of a complex number

Paradox with function representation

The real and imaginary parts of this complex number

How to find number of real and complex roots?

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