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goformit100Best ResponseYou've already chosen the best response.0
solve it by cosine rule
 one year ago

agilloglyBest ResponseYou've already chosen the best response.1
I don't know how to.
 one year ago

agilloglyBest ResponseYou've already chosen the best response.1
How? I don't have all the measurements.
 one year ago

alanli123Best ResponseYou've already chosen the best response.1
You don't need all the measurements
 one year ago

alanli123Best ResponseYou've already chosen the best response.1
dw:1339195102769:dw
 one year ago

alanli123Best ResponseYou've already chosen the best response.1
You know what b, c, and angle theta are. all you have to do is plug it in and solve for a
 one year ago

agilloglyBest ResponseYou've already chosen the best response.1
I got 130.9 and that isn't and option.
 one year ago

alanli123Best ResponseYou've already chosen the best response.1
Could you explain to me how you got your answer?
 one year ago

agilloglyBest ResponseYou've already chosen the best response.1
I just tried to plug everything in like you said. 7^2+9^22(7)cos(117). I got 136.35. I did something wrong the first time. But its obviously still wrong.
 one year ago

alanli123Best ResponseYou've already chosen the best response.1
Ok here's where you are wrong. It's 7^2+9^22ab cos 117. Can you see where you went wrong? (hint: you're missing b)
 one year ago

alanli123Best ResponseYou've already chosen the best response.1
You did 2(7), the correct term should be 2(7)(9) because it is 2ab
 one year ago

agilloglyBest ResponseYou've already chosen the best response.1
Okay. I thought I forgot a number. Ill try it again.
 one year ago

agilloglyBest ResponseYou've already chosen the best response.1
I picked 187.2 and it said the correct answer is 13.68.
 one year ago
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