3 years ago

Which equation correctly uses the law of cosines to

Mathematics

2 answers:

seraphim [82]3 years ago

8 0

Answer:

fourth option

Step-by-step explanation:

Using the Law of Cosines in Δ STU to find s

s² = t² + u² - 2us cosS

where t = 9, u = 10 and S = 100° , thus

s² = 9² + 10² - 2(9)(10)cos100°

Oduvanchick [21]3 years ago

5 0

I think answer should be the fourth option please give me brainlest I hope this helps

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