a.-x-pi
b.-x
c.x
d.pi-x
e.x-pi
b.-x
c.x
d.pi-x
e.x-pi
-
{ a } sin x < 0---> arcsin will be in the 4th quadrant { [ - π / 2 , 0 ] }
so IF x = 4π / 3 then - 4π / 3 - π = { - 2π - π / 3 } , a 4th quadrant angle
so IF x = 4π / 3 then - 4π / 3 - π = { - 2π - π / 3 } , a 4th quadrant angle