Question

Sin 30
Cos 45
Tg1
Ctg45

Answer 1

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

Answer 2

$sin30= \frac{1}{2}$
$cos45= \frac{ \sqrt{2} }{2}$
$ctg45=1$
tg1≈0.017