Question

Calcule os valores de seno e do cosseno de 0, īī/2, īī, 3īī/2 e 2īī.

Answer 1

Seno 0°: 0
Seno $\pi$/2: 1
Seno $\pi$: 0
Seno 3$\pi$/2: -1
Seno 2$\pi$: 0

Cosseno 0°: 1
Cosseno $\pi$/2: 0
Cosseno $\pi$: -1
Cosseno 3$\pi$/2: 0 
Cosseno 2$\pi$: 1