1−cos50°sin50°\frac{1-\cos50\degree}{\sin50\degree}sin50°1−cos50° sama dengan ....
cosec50°\operatorname{cosec}50\degreecosec50°
tan50°\tan50\degreetan50°
sec25°\sec25\degreesec25°
tan25°\tan25\degreetan25°
sin50°\sin50\degreesin50°