A plane is flying 3900 m above the level ground. The angle of elevation from the control tower to the plane is 11.4°.
what is the distance between the plane and the control tower?

i think this could be a possible answer (1 / 84) -1

good luck! : d

b

step-by-step explanation:

the word superfluous means unnecessary

that is the sum

step-by-step explanation:

there are no other answers without knowing the variables values

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.