
Using the fact that cos is 2π-periodic, we have

That is,
for any
and integer
.

We get 2 solutions in the interval [0, 2π] for
and
,

Answer:
33 1/3 please tank this
Step-by-step explanation:
Arc FE: 76°
arc DEF: 180°
arc CFD: 284°
arc DFE: 256°
Step-by-step explanation:
it's like the y in an equation