What sign has sinx + cosx for x=140 degrees

according to me...the sign should be positive...because 140 lies in second quadrant and sinx in second quadrant is +ve, also, sin x is increasing function and cox x is decreasing function.....therefore..the sign should be positive.

and also

according to calculator

sin 140 = 0.98023965944

cos 140 = -0.197813574

 

sin 140 + cos 140 = +0.78242608543