Question

4 sin(2 pi - a), если a =7pi/6

Answer 1

4sin(2π-7π/6)=4sin5π/6=4*1/2=2

Answer 2

$4sin(2 pi - frac{7 pi }{6} )=4sin( frac{12 pi -7 pi }{6} )=4sin (frac{5 pi }{6} )=4sin( frac{ pi }{6} )=4* frac{1}{2} =2$