Answer: 
Step-by-step explanation:
We need to apply the following identity:

Then, applying this, you know that for
:

We need to remember that:
and 
Therefore, we need to substitute these values into
.
Then, you get:



Answer:
Where is the numbers dude? LOL
Step-by-step explanation:
Answer:
Step-by-step explanation:
Answer:
Can you get a picture please or more detail...
What? Add more detail please