Formula:1927

Digital Library of Mathematical Functions ID 4.21.E21

${\displaystyle{\displaystyle\sin\frac{z}{2}=\pm\left(\frac{1-\cos z}{2}\right)^{1/2},}}$

Symbols List

• ${\displaystyle{\displaystyle\cos\NVar{z}}}$: cosine function
• ${\displaystyle{\displaystyle\sin\NVar{z}}}$: sine function
• ${\displaystyle{\displaystyle z}}$: complex variable
 

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