Answer:
144
Step-by-step explanation:
sorry if im wrong its been awhile since ive done this
Answer:
<h2>BR ≈ 49.0</h2>
Step-by-step explanation:
Use cosine:
![cosine=\dfrac{adjacent}{hypotenuse}](https://tex.z-dn.net/?f=cosine%3D%5Cdfrac%7Badjacent%7D%7Bhypotenuse%7D)
We have
![adjacent=42\\hypotenuse=BR\\\alpha=31^o](https://tex.z-dn.net/?f=adjacent%3D42%5C%5Chypotenuse%3DBR%5C%5C%5Calpha%3D31%5Eo)
![\cos31^o\approx0.8572](https://tex.z-dn.net/?f=%5Ccos31%5Eo%5Capprox0.8572)
Substitute:
![\dfrac{42}{BR}=0.8572](https://tex.z-dn.net/?f=%5Cdfrac%7B42%7D%7BBR%7D%3D0.8572)
<em>cross multiply</em>
<em>divide both sides by 8,572</em>
![BR=\dfrac{420,000}{8,572}](https://tex.z-dn.net/?f=BR%3D%5Cdfrac%7B420%2C000%7D%7B8%2C572%7D)
![BR\approx49.0](https://tex.z-dn.net/?f=BR%5Capprox49.0)
I believe the answer is a diagonal
The second option:
2(8) - 3(1) = 13, which is greater than 12