21
QuizMultiple Choice
Triangle Congruence: SSS and HL — Unit test
Question 21 • Geometry - Semester 1 Pathways
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)
Answer
A
r = 5 and t = 7B
r = 3 and t = 3C
s = 7 and t = 5D
s = 5 and t = 3