Sin 30
Cos 45
Tg1
Ctg45

sin 30 = 1/2
cos 45 = √2/2
tg 1 = π/4
ctg 45 = 1

[tex]sin30= \frac{1}{2} [/tex]
[tex]cos45= \frac{ \sqrt{2} }{2} [/tex]
[tex]ctg45=1[/tex]
tg1≈0.017