936 squares units I believe.
Answer:
See the proof below.
Step-by-step explanation:
For this case we need to proof the following identity:

So we need to begin with the definition of tan, we know that
and we have this:
(1)
We also have the following identities:


And if we apply those identities into equation (1) we got:
(2)
We can divide numerator and denominator from expression (2) by
like this:

And if we simplity we got:

And with that we complete the proof. And that appies for all 
Answer:
<h3>168cm3</h3>
Step-by-step explanation:
I think you want to write it
so it's:
9-1/3
Answer:
Step-by-step explanation:
The negative of a negative is the opposite positive number. When you subtract a positive integer from a negative integer, the difference is always negative. When you subtract two negative integers and the first integer is smaller than the second integer , the difference is negative.