der Sinus
sine
A trigonometric function that describes, in a right triangle, the ratio of the length of the opposite side to the length of the hypotenuse.
EXAMPLE
Der Sinus von 30 Grad ist exakt 0,5.
The sine of 30 degrees is exactly 0.5.
der Sinus
sine / sinus
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Meanings
der Sinus
sinus
In anatomy, a hollow structure, a bulge, or a channel that carries blood. The best-known examples are the paranasal sinuses.
EXAMPLE
Wegen der Entzündung seiner Sinus riet der Arzt zu einer Inhalation.
Because of the inflammation of his sinuses, the doctor recommended inhalation.
Usage tips
Context clue
You can recognize the meaning of 'Sinus' (sine / sinus) from the context. In mathematics, you will hear words like 'Winkel' (angle), 'Grad' (degree), or 'Cosinus' (cosine). In medicine, you will hear words like 'Entzündung' (inflammation), 'Nase' (nose), or 'Arzt' (doctor).
EXAMPLE
Für die Prüfung müssen wir Sinus und Cosinus berechnen können.
For the exam, we need to be able to calculate sine and cosine.
Use in math
In mathematics, 'Sinus' (sine) is almost always used with the preposition 'von' (of) and a degree or angle specification. A typical construction is 'der Sinus von [Zahl] Grad' (the sine of [number] degrees).
EXAMPLE
Kannst du mir erklären, wie man den Sinus von 45 Grad berechnet?
Can you explain to me how to calculate the sine of 45 degrees?
Use in medicine
In a medical context, 'Sinus' (sinus) is often used in the plural ('die Sinus') when referring to the paranasal sinuses. Common combinations are 'eine Entzündung der Sinus' (an inflammation of the sinuses) or 'verstopfte Sinus' (blocked sinuses).
EXAMPLE
Im Winter haben viele Menschen Probleme mit trockenen oder verstopften Sinus.
In winter, many people have problems with dry or blocked sinuses.
In real life
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