Suppose ? is an angle in standard position

Question

Suppose θ is an angle in standard position And cos θ=-1/2 and sinθ=-square root of 3 over 2. Can the value of θ be 60 degrees? Can it be -120 degrees ? 

Answer 1

cos(4∏/3)=cos(240º)=-1/2

sin(4∏/3)=sin(240º)=-√3/2