The inverse of this function is f(x) = 
To find the inverse of any function, start by switching the x and f(x) term. Then solve for the new f(x). The result will be the inverse function. The step-by-step process is below for you.
f(x) = 
----> Switch the x and f(x)
x = 
----> Muliply both sides by 3
3x = -15 + 4f(x) ----> Add 15 to both sides
3x + 15 = 4f(x) ----> Divide both sides by 4.
f(x) =
X-1/x is the answer you need for this
Look here https://www.varsitytutors.com/algebra_1-help/how-to-find-the-nth-term-of-an-arithmetic-sequence
The Law of Sines says
We don't have to worry about the obtuse supplement because a triangle can only have one obtuse angle, and that's B.
Answer: A=29.44°, C=34.96°
