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ya say
solve it by cosine rule

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Other answers:

I don't know how to.
|dw:1339191253421:dw|
use it
How? I don't have all the measurements.
You don't need all the measurements
One sec
|dw:1339195102769:dw|
You know what b, c, and angle theta are. all you have to do is plug it in and solve for a
Okay
I got 130.9 and that isn't and option.
one sec
Could you explain to me how you got your answer?
I just tried to plug everything in like you said. 7^2+9^2-2(7)cos(117). I got 136.35. I did something wrong the first time. But its obviously still wrong.
Ok here's where you are wrong. It's 7^2+9^2-2ab cos 117. Can you see where you went wrong? (hint: you're missing b)
You did -2(7), the correct term should be -2(7)(9) because it is -2ab
Okay. I thought I forgot a number. Ill try it again.
187.20?
Yes!
|dw:1339192083258:dw|
You are correct!
found ur answer?
Medal please lol
I picked 187.2 and it said the correct answer is 13.68.
answer is 187.20

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