Question

Expresse:
(a) 60◦ em radiano;
(b) 210◦ em radiano;
(c) 10π/9 rad em grau;
(d) π/20 rad em grau.

Answer 1

Oie, Td Bom?!

a)

$= 60°$

$= 60° \: . \: \frac{\pi}{180°}$

$= \frac{\pi}{3}$

b)

$= 210°$

$= 210° \: . \: \frac{\pi}{180°}$

$= 7 \: . \: \frac{\pi}{6}$

$= \frac{7\pi}{6}$

c)

$= \frac{10\pi}{9}$

$= \frac{10\pi}{9} \: . \: \frac{180°}{\pi}$

$= \frac{10}{9} \: . \: 180°$

$= 10 \: . \: 20°$

$= 200°$

d)

$= \frac{\pi}{20}$

$= \frac{\pi}{20} \: . \: \frac{180°}{\pi}$

$= \frac{1}{20} \: . \: 180°$

$= 9°$

Att. Makaveli1996