Question

Решите пожалуйста,хочу проверить: sin7π/6

Answer 1

sin(7п/6)=sin(6п+п/6)=sin(-п/6)=-0,5

Answer 2

$sinfrac{7pi}{6}= sinfrac{6pi+pi}{6} = sin(frac{6pi}{6}+frac{pi}{6} )= sin(pi+frac{pi}{6} ) =-sinfrac{pi}{6}=-frac{1}{2}=-0,5$