Answer:
17.7 as the actual gas mileage recorded is 12 mpg.
Step-by-step explanation:
<span>2 + 15a - 2
= 15a (because 2 - 2 = 0)
hope it helps</span>
Whats your problem I can help you, what type of problem is it?
Since beta is in the first quadrant, the final answer will be positive.
To find cos(beta) so we can use the half angle identity, we can substitute into the Pythagorean identity. Doing so gives us that

So, this means that
