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

Question

Clarissa Hamilton

2 October, 05:34

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Ignacio Arellano · Answer 1

Ignacio Arellano 2 October, 08:14

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The correct answer is D.

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