For this case what we must do is use the law of cosines.
We then have the following equation:

Where,
a, b: sides of the triangle
x: angle between sides a and b.
Substituting values we have:

Clearing the value of c we have:
Answer:
An expression that is equivalent to how many feet the oak trees are from each other is:
A. replace pi with 3.14 and check
Answer: the answers are -3 and -6
Step-by-step explanation:
you need to distribute the 5. multiply each term in the parentheses by 5:
5(1) + 5(3x)
5 + 15x
7. 3c+3=84
3c=81
c=27
So either 81/3 but if simplified its 27/1
8. The correct answer would be 55=31+t