The law of cosines for rst can be set up as 52 = 72 + 32 – 2(7)(3)cos(s). what could be true about rst?

law of cosines: a2 = b2 + c2 – 2bccos(a)

r = 5 and t = 7
r = 3 and t = 3
s = 7 and t = 5
s = 5 and t = 3

we know that

the law of cosines is equal to

In this problem  for the triangle RST

we have

so

or

or

the possibilities are

1)

2)

therefore

the answer is the option

s = 5 and t = 3

the answer is thin because within context, the stanza concludes the and frail tone the people have toward each other, and the fact that it would be thin, makes the most sense compared to "pliable" or "not hard or firm to the touch". hope this , good luck.

step-by-step explanation:

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