Answer Happy

In Exercises 6-9, use the given sign of the cosine and sine functions to find the quadrant in which the terminal point determined by r lies. 6. cos(1)<0 and sin(()<0 7. cos(1) >0 and sin(() >0 8. cos(i) <0 and sin(t)>0 9. cos(1) >0 and sin(t) <0