SOLUTION: What is the measurement of a if m∠A = 43o, b = 20, c = 22 and ∆ABC is an oblique triangle? A.15.51 B.23.7

Question 1194216: What is the measurement of a if m∠A = 43o, b = 20, c = 22 and ∆ABC is an oblique triangle?
A.15.51 B.23.71
C.25.29
D.39.08
Answer by ikleyn(52879) (Show Source): You can put this solution on YOUR website!
.

Apply the cosine law formula

https://www.google.com/search?q=cosine+law+formula&rlz=1C1CHBF_enUS910US910&oq=cosine+law+formula&aqs=chrome..69i57j0i512l7j0i390l2.7606j0j15&sourceid=chrome&ie=UTF-8

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