cosine
IPA/ˈkəʊsaɪn/
IPA/ˈkəʊsaɪn/
cosine — noun
- cosinesingular
- cosinesplural
1. in trigonometry, a cosine is the number you get in a right triangle by comparing
1.名詞B2
釋義
in trigonometry, a cosine is the number you get in a right triangle by comparing the side beside an angle with the triangle's longest side.
例句
Liam used cosine to find the ladder's height against the wall.
use cosine to find a missing height
Amelia checked the cosine of 60 degrees before finishing her homework.
the cosine of [angle]
On the worksheet, Mizuki compared sine, cosine, and tangent for each angle.
The calculator showed the cosine value after Gabriel entered the angle.
同義詞
- cos
the usual shortened form in formulas and on calculators
文法句型
the cosine of [angle]
find the cosine of [angle]
用法筆記
Usually appears in the pattern the cosine of [angle]. In school mathematics and on calculators, it is often shortened to cos.
常見錯誤
❌The cosine is the longest side of the triangle.
✅The cosine is the number found by comparing one side with the triangle's longest side.
💡Cosine is a ratio, not a side.
❌I drew a cosine on the paper.
✅I wrote the cosine for the angle on the paper.
💡Cosine is a value or function, not a shape you draw.