In any triangle whose sides are a, b, and c and angles α, β, and γ, the law of cosines is written in the form: a.
b.
c.
d. ​

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.