角度の正接を計算します。
シグネチャ
戻り値
説明
例
{import * from CURL.LANGUAGE.MATH-CONSTANT} {text {br} tangent of pi/4 is {tan quarter-pi * 1rad} {br} tangent of 0 is {tan 0rad} {br} tangent of -pi/4 is {tan -quarter-pi * 1rad} }