Answer:
<h2>The answer is 1</h2>
Step-by-step explanation:
First of all transform the expression using trigonometric identities
That's



So we have

Reduce the expression with tan x
We have

Reduce the expression with cos x
That's

Reduce the expression with sin x
We have

We have the final answer as
<h3>1</h3>
Hope this helps you
Answer:
D. 
Step-by-step explanation:
I assume this is your problem:

If so, then this is the solution.




Answer:
B (I think)
Step-by-step explanation:
A function can't have two X values that are the same (If I remember correctly) and the second table is the only one that doesn't have duplicated X values