tangent

• Существительное, обозначающее прямую линию или плоскость, которая касается кривой или изогнутой поверхности в одной точке, не пересекая её, или тригонометрическое отношение противолежащего катета к прилежащему в прямоугольном треугольнике.

A noun referring to a straight line or plane that touches a curve or curved surface at a single point without crossing it, or the trigonometric ratio of the opposite side to the adjacent side in a right-angled triangle.

1. Geometry lineB2formalscientific

   A straight line that touches a curve or curved surface at a single point without crossing it.

   Касательная

   • The tangent to the circle at point P is perpendicular to the radius.
   • We calculated the slope of the tangent line using calculus.
   • The graph shows a tangent touching the curve at exactly one point.

2. Trigonometric ratioB2formalscientific

   In a right-angled triangle, the ratio of the length of the side opposite an angle to the length of the adjacent side.

   Тангенс

   • The tangent of 45 degrees is equal to 1.
   • Use the tangent function to find the height of the building.
   • The calculator gives the tangent of the angle as 0.577.