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Natali5045456 [20]
3 years ago
10

Towers A and B are located 10 miles apart. A ranger spots a fire at a 42-degree angle from tower A. Another fire ranger spots th

e same fire at a 64-degree angle from tower B. To the nearest tenth of a mile, how far from tower B is the fire? 7.0 mi 7.4 mi 9.4 mi 13.4 mi

Mathematics
2 answers:
faltersainse [42]3 years ago
8 0

Answer:

9.4

Step-by-step explanation:

We are solving for b, not a. I know this because I did this problem before and it has popped up here again on brainly. That is why the guest commented "it is incorrect'

steposvetlana [31]3 years ago
6 0

Answer:

7.0 mi

Step-by-step explanation:

see the attached figure to better understand the problem

step 1

Find the measure of angle C

Remember that the sum of the interior angles in any triangle must be equal to 180 degrees

so

A+B+C=180^o

substitute the given values

42^o+64^o+C=180^o

C=180^o-106^o=74^o

step 2

Find the measure of a

Applying the law of sines

\frac{c}{sin(C)}=\frac{a}{sin(A)}

substitute the given values

\frac{10}{sin(74^o)}=\frac{a}{sin(42^o)}

solve for a

a=\frac{10}{sin(74^o)}sin(42^o)

a=7.0\ mi

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