Question

Calculati: sin pi/12, va rog!

Answer 1

Hmm sin π/12=π/6×1/2=1/2×1/2=1/4.
sin π/6 este sin 30, adica 1/2.
Succes !

Answer 2

$\it sin\dfrac{\pi}{12} = sin( \dfrac {\pi}{4} - \dfrac{\pi}{6})$