Fire towers A and B are located 10 miles apart. Rangers at fire tower A spot a fire 42 degrees, and rangers at fire tower B spot the same fire at 64 degrees. How far from tower A is the fire to nearest tenth of a mile?

Step-by-step explanation:

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.

m∠a is 90°

m∠b is 40°