Why is it important for historians to corroborate the information
found in pieces of historical evidence?
o
a. every claim must be supported with both a primary and a
secondary source.
o
b. each paragraph of an argumentative essay should use
different sources.
o
c. corroborating evidence simplify it for a wider audience.
o d. different pieces of evidence may contradict the original
information
submit

A

Explanation:

Corroborate means to confirm a finding, theory, or a statement(claim is a statement).

Contradict means a conflict.

Now this is out the way; the correct answer is A

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.