Question

18°30' graus em radianos

Answer 1

30' =

$\frac{1}{2} grau$

Então, 18°30'=

$18 + \frac{1}{2} = \frac{36 + 1}{2} = \frac{37}{2} graus$

$1\pi \: rad.................180 \\ x......................... \frac{37}{2 } \\ = > \frac{37\pi}{2} = 180 x = > x = \frac{ \frac{37\pi}{2} }{180} \\ = > \frac{37\pi}{2} . \frac{1}{180} = \frac{37\pi}{360} rad$

Answer 2

Resposta:

1° = 60'

30' = 0,5°

18,5°

usando a regra de 3

180° ----- π rad

18,5° ----- x

180x = 18,5 π rad

18,5 π rad

x = --------

180

3,7

x = ----- π rad

36

37

-------

x = 10 π rad

--------

36

37

x = ------ π rad

360

x ≈ 0,10 π rad