Determine the value of the variable in the simplified expressions. What is the value of x in this simplified expression? (Negati
2 answers:
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Given:
Triangle LJK.
LJ = 89 in, LK = 28 in and m∠L = 42°
To find:
The length of missing side JK.
Solution:
LJ = k = 89
LK = j = 28
JK = l = ?
Using law of cosine:
Substitute the given values.
Taking square root on both sides.
The length of the missing side is 70.7 in.
Answer:
3
Step-by-step explanation:
Given
f(x) = , then
f(12) = =
= ± 3
There are 2 values 3 and - 3
The positive value of f(12) is + 3