TeXipedia

tg

Represents the trigonometric tangent function in mathematical expressions, particularly common in European and Russian notation.

Overview

Serves as an alternative notation for the tangent function, primarily used in European mathematical texts and publications where 'tg' is preferred over 'tan'.

  • Commonly found in trigonometric equations and geometric calculations
  • Particularly prevalent in Eastern European and Russian mathematical literature
  • Functionally identical to \tan in mathematical meaning
  • Often used alongside similar abbreviated forms like \ctg for cotangent

Examples

Expressing a trigonometric tangent function in a mathematical equation

tgx=sinxcosx\tg x = \frac{\sin x}{\cos x}
\tg x = \frac{\sin x}{\cos x}

Using tangent in a trigonometric identity

1+tg2x=sec2x1 + \tg^2 x = \sec^2 x
1 + \tg^2 x = \sec^2 x

Calculating the angle of inclination using tangent

α=arctan(tgθ)=θ\alpha = \arctan(\tg \theta) = \theta
\alpha = \arctan(\tg \theta) = \theta