tanjo gismu

x1 is the trigonometric tangent of angle/arctangent x2.

See also sinso.

In notes:

sinso
x1 is the trigonometric sine of angle/arcsine x2.
dutsinso
x1 is the trigonometric cosine of angle/arccosine x2.
seldutsinso
s2 is the angle/arccosine of cosine s1.
selsinso
s2 is the angle/arcsine of sine s1.
seltanjo
t2 is the angle/arctangent of tangent t1.
tsekane
x1 (linear manifold, vector, etc.) is/lies secant to x2 (object, surface, curve, manifold, etc.) passing through or toward points/loci x3 (set of intersected points), by standard/definition/in system x4.
zo'anjo
x1 (linear manifold, vector, etc.) is/lies tangent to x2 (object, surface, curve, manifold, etc.) at point/locus x3, by standard/definition/in system x4.