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Just use the Pythagorean Theorem
(9 +x)^2 = 15^2 + x^2
x^2 + 18x + 81 = 225 + x^2
18x = 144
x = 8
So the three sides of the triangle are
15, 8 and 17
Tan 2 pi/3= (sin2pi/3)/(cos2pi/3)= (sqrt 3)/2 dividend by (-1/2)= - sqrt 3
Answer:
The function 
Step-by-step explanation:
The Range of any function is complete set of all possible resulting values of the dependent variable , after substituting the domain.
so, the function
has range
This includes - 4 .
Hence, the function is
.