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 last choice

step-by-step explanation:

damm bro the struggle

step-by-step explanation: