Two points A and B are on opposite sides of a building. A surveyor selects a third point C to place a transit. Point C is 54 feet from point A and 70 feet from point B. The angle ACB is 52º.
How far apart are points A and B?
A) 74.1 ft
B) 111.7 ft
C) 56.2 ft
D) 100.7 ft

step-by-step explanation:

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answer: c

substitute in the values.

for a:

f(0) = 0 + 9

f(0) = 9

a is a solution.

for b:

f(7) = 14 + 9

f(7) = 23

b is a solution.

for c:

f (3) = 6 + 9

f(3) = 15

c is not a solution. it's supposed to be 14.

for d:

f(2) = 4 + 9

f(2)= 13

d is a solution.