Mathwords: Cis

(追記) (追記ここまで)

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(追記) (追記ここまで)

Cis

A complex-valued function made from sine and cosine with definition cis θ = cos θ + isin θ.

Note: cis θ is the same as e^iθ.

See also

Polar form of a complex number, trig function, e

this page updated 15-jul-23
Mathwords: Terms and Formulas from Algebra I to Calculus
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