Answer:
Option (3)
Step-by-step explanation:
By applying cosine rule in the triangle ABC,
BC² = AC² + AB² - 2(AC)(AB)cosA
5² = 3² + 7²- 2(3)(7)cosA
25 = 9 + 49 - 42cos(A)
25 = 58 - 42cos(A)
cos(A) = ![\frac{33}{42}](https://tex.z-dn.net/?f=%5Cfrac%7B33%7D%7B42%7D)
A = ![\text{cos}^{-1}\frac{11}{14}](https://tex.z-dn.net/?f=%5Ctext%7Bcos%7D%5E%7B-1%7D%5Cfrac%7B11%7D%7B14%7D)
A = 38.21°
A ≈ 38°
Option (3) will be the correct option.
The polar coordinate system.
Answer:
the answer is linear
Step-by-step explanation:
Linear is a line while non linear is not.
This is so easy. You should try before posting a question on this site. No offense.
Having said that im still here to help :)
10. 4,2 -3,5
11. Sorry dont know this one
12. Plot a point at -3,-4 label is Resturant
13. Plot a point at 0,-3 label it Beth
I will only post these ones, The others are extremely simple.
Answer:
The first one and the second one.
Step-by-step explanation: