Answer:
Cos (5π/3)
Cos (π/6)I think this one
Answer:
The answer to the problem is C I think hopefully I’m right I did the problem twice to make sure
Distribute 
to every term inside the parentheses.
Simplify with multiplication.
You can't simplify further by adding, so leave the answer as-is.
Whether it can be equal to that value. For example, if 5 is greater than x, then an open circle will be useful. If 5 is greater than or equal to x, a closed circle will be used.
