Posted by Louis on Sunday, September 23, 2007 at 11:07am.
You are dealing with the law of sines and cosines. I am not certain what you don't get. Is it the algebra?
1) b=14.2*sin67 / sin38 put these in the calculator and compute.
2) Same issue:
3) Law of cosines:
cosB= ((10.7)^2 - (9.5)^ - (12.4)^2 )/[(9.5)(12.4)]
Then to find angle B, take the inverse cosine of that result.
If you have questions, ask.
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