Answer:
Step-by-step explanation:
hello :
3 sin x = 1 means : sin x = 1/3
so :all x : x = sin^-1(1/3) =19.5°+360°K or : x = (180°-19.5°)+360°K' ...K and K' in Z .
because : sin(x+360°K)= sinx and sin (180°- x ) = sinx
but : 0° ≤ x ≤ 720°
K=0 : x = 19.5°
k =1 : x=19.5°+360°=379.5°
K'=0 : x = 180°-19.5°= 160.5°
k' =1 : x=160.5°+360°=520.5°
