Question

Given that the length a

Answer 1

Explanation:

Just for completeness you could represent the longest line as c and the inequality would be

a<b<c

Rule: The largest angle is opposite the largest side. The smallest angle is opposite the smallest side.

<ACB is opposite the longest line (c). So one of B or C is correct.

<CAB is the next largest angle. It is opposite b

<CBA must be the smallest angle.

So the correct order must be <CBA, <CAB, <ACB must be the order you seek.