Use ΔABC to find the value of cos B
A) 12/13
B) 12/5
C) 5/13
D) 5/12
1 answer:
Answer:
C) 5/13
Step-by-step explanation:
The mnemonic SOH CAH TOA reminds you that the cosine ratio is ...
Cos = Adjacent/Hypotenuse
For the given problem, this means ...
cos(B) = BC/BA = 15/39
cos(B) = 5/13
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Hope this helps. If any questions, please ask in comments.
