Answer:
https://prezi.com/
Step-by-step explanation:
search up the answer plus there is a video too
Step-by-step explanation:

The product of
is negative whereas the product of 
Answer
12
Step-by-step explanation:
You need to use cosine because the side length needed is adjacent and you have the hypotenuse.Set up a proportion of "cos23 = x/13" and solve by cross multiplying. Then just round.