Answer:
The triangle is
Step-by-step explanation:
The answer is A) 3.
I hope this helps.
Answer:
<h2>A.

</h2>
Step-by-step explanation:
The given formula is

Where
and 
To solve for
, first we need to move 

Then, we move the term 1

Finally, we move the factor 

Replacing given values, we have

Thereofre, the right answer is A.