The value of the sine of an angle is negative in the third and fourth quadrant. Hence options A and B are not the options.
sin250=−sin(250−180)=−sin70\sin 250 = -\sin (250 - 180) = -\sin 70sin250=−sin(250−180)=−sin70
sin290=−sin(360−290)=−sin70\sin 290 = -\sin (360 - 290) = -\sin 70sin290=−sin(360−290)=−sin70
