Перевод: tangent

One particularly useful type, shown in Fig. 1, is defined by the position of each end (x and y), plus the direction of a tangent to the spline at each end (a).
The Apollonian Gasket , attributed to Apollonius of Perga, is bounded by three large circles tangent two by two.
Fig. 1 illustrates that by linking such splines at a common point and opposite tangent directions, an indefinite length of smooth curve can be defined with relatively little data.
And how's all this for a tangent?
Tangent A = BC / AC ; = a / b ; = =
"Asking a question, saying something, and then veering off onto a completely different tangent.
The trigonometrical ratios sine, cosine and tangent were used by Hipparchus during the second century BC to calculate the diameter of the Earth and the distance of the Moon with amazing accuracy: 7900 and 238 000 miles respectively.
To draw the tractrix , draw the tangent to circle centre O , from P 1 to find T .
In these curves the tangent at any point makes a constant angle with the radius drawn to that point from a fixed point.
Occasionally a series starts this way, then veers off on a tangent to do with steering wheel size or some other imponderable.
Above all, the questions to be decided in a libel case stand at a curious tangent to the stories that lead up to them.
From P 3 draw a tangent to circle centre 4, at T 4 .
Where this tangent P 1 T 2 cuts vertical number 3, mark P 3 .

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