Answer:
Yes,
is a solution
Step-by-step explanation:
Recall that
. By replacing
in the given trigonometric equation, we get 0 (zero) as a result, so this value is a solution:

Answer:
1/20
there are 20 students altogether
Step-by-step explanation:
um I'm not sure
I think its either A or C. Leaning more to A. Do you think you could explain the question just a bit more?
Answer:
correct me if i'm wrong but i think
1.False
2.False
3.True
4.True