Answer: The first option.
Step-by-step explanation:
1. You need to remember that:
- An even function is a function with the following property:
f(-x)=f(x)
- An odd function is a function with the following property:
f(-x)=-f(x)
2. By definition, the contangent is an odd function, therefore you have that:
cot(-θ)=-cot(θ)
Then:

3. So, you can coclude that the first step is wrong. Therefore, the answer is the first option.
Answer:
2
Step-by-step explanation:
5-3=2 it's simple really
Answer:
52b-7.5
Step-by-step explanation:
Answer:
1/2
Step-by-step explanation:
21 divided by 42 is 1/2
C C because the absolute value of -100 is 100 which is greater than zero