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OpenStudy (danjs):
\[a^2 = 6^2 + 13^2 - 2(6)(13)*\cos(50)\]
OpenStudy (anonymous):
I don't have a calculator except my phone so when I do it, I don't get any of my answer choices
OpenStudy (danjs):
you get side a from that one, then you can use law of sines to get the last 2 angles
\[\frac{ \sin(A) }{ a } = \frac{ \sin(B) }{ b } = \frac{ \sin(C) }{ c }\]
OpenStudy (anonymous):
Is there anyway you can calculate that because my phone doesn't get me the correct answer
OpenStudy (danjs):
a^2 = 36 + 169 - 156*(0.6428)
a^2 = 104.7
a = about 10.2
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