Question

what is the trigonometric of 0°and 90°?

Answer 1

sin0°=0 , sin90°=1
cos0°=1 , cos90°=0
tan0°=sin0°/cos0°=0
,tan90°=infinity
cosec0°=(1/sin0°)=infinity, cosec90°=1
sec0°=(1/cos0°)=1, sec90°=infinity
cot0°=(1/tan0°)=infinity, cot90°=0