In triangle ABC, a=5, M<B=92°, c=3.Find b.

Lennie Carroll

Lennie Carroll

Answered question

2020-12-17

In triangle ABC, a=5, M<B=92°, c=3. Find b.

Answer & Explanation

Latisha Oneil

Latisha Oneil

Skilled2020-12-18Added 100 answers

The given case is SAS (two sides and included angle) so use the Law of Cosines:
b2=a2+c22accosB
b2=52+322(5)(3)cos92°
b2=3430cos92°
b=3430cos92°
b ~ 5.92

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