la volpaia pizzeria restaurant, ristorante italiano firenze tokyo, seoul, phnom penh.
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Company Address:
PO Box 12281,SILVER SPRING,MD,USA
ZIP Code: Postal Code:
20907
Telephone Number:
8227940514 (+1-822-794-0514)
Fax Number:
Website:
lavolpaia. com, lavolpaia. net, lavolpaia. org
Email:
USA SIC Code(Standard Industrial Classification Code):
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Sine, Cosine and Tangent - Math is Fun Sine, Cosine and Tangent (often shortened to sin, cos and tan) are each a ratio of sides of a right angled triangle: For a given angle θ each ratio stays the same
tan 为什么称为正切?正切的解释是什么? - 知乎 tan作为三角函数因此叫做“正切”,cot叫做“余切”。 同样sec是来自拉丁语secō“切qiē割”,作为三角函数叫做“正割”,csc叫做“余割”。 sine则比较复杂,它也是沿用拉丁语,但本不具有弦的意思,是拉丁语对外来语的误译造成的。
Tangent - Math. net On the unit circle, tan (θ) is the length of the line segment formed by the intersection of the line x=1 and the ray formed by the terminal side of the angle as shown in blue in the figure above