Why did the United States invade Afghanistan after the September 11 attack?
1) The American government believed it was developing nuclear weapons.
2) The American government believed it was harboring terrorists.
3) The American government believed it was responsible for the attack.
4) The American government believed it was communist and corrupt.

3) The American government believed it was responsible for the attack.

answer: this problem has only trivial solutions, with all points on the same line. x=5 or x=7/5.

step-by-step explanation:

there are three triangles, and three unknowns: x, y=length of middle segment, and z=cos(angles marked with red arc).

we need

and law of cosines,

the three equations are

see attached image for solution.

can we see the cartoon?