Answer :
Answer:
180°
Step-by-step explanation:
cos(x) = - 1 has only 1 solution in the required interval , that is
x = [tex]cos^{-1}[/tex] (- 1) = 180°
Answer:
180°
Step-by-step explanation:
cos(x) = - 1 has only 1 solution in the required interval , that is
x = [tex]cos^{-1}[/tex] (- 1) = 180°