Center of Earth
7. A scientist studies two islands shown at the right. The distance
from the center of the Earth to the equator is about 3960 mi.
a. What is the measure in radians of the central angle that intercepts tl
arc along the equator between the islands? (5pnts)
equator
b. About how far apart are the two islands? (5pnts)

r(0,90)(x,y) . t(-5,0)

last option

step-by-step explanation:

∆def to ∆d"e"f"

- rotate 90 counterclockwise degrees

- then translated 5 to the left (x --> x - 5)

answer is the last option

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.

32.5 is the answer i got thats the answer

the answer on e2020 was d.