Which 3 major catastrophes struck europe prior to the protestant reformation?

•the great famine
•the seven years' war
•the great earthquake
•the hundred years' war
•the black plague

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.

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