X=60° (equilateral triangle)
y=120°
Working: (360°-120°)/2
D the last please tell me if I’m right thanks
Answer:
Step-by-step explanation:
we have
Find the inverse function 
step 1
Let
y=f(x)
step 2
Exchanges variables, x for y and y for x
step 3
isolate the variable y
step 4
Let
Answer:
The domain of a function is the set of all possible inputs for the function. For example, the domain of f(x)=x² is all real numbers, and the domain of g(x)=1/x is all real numbers except for x=0. We can also define special functions whose domains are more limited.
Step-by-step explanation:
Another way to identify the domain and range of functions is by using graphs. Because the domain refers to the set of possible input values, the domain of a graph consists of all the input values shown on the x-axis. The range is the set of possible output values, which are shown on the y-axis.
hope this helps a little
Answer:
24
Step-by-step explanation:
use Pythagoras theorem
a^2 + b^2 = c^2
18^2+b^2=30^2
b^2 = 30^2 - 18^2
b = √576 =24
