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OpenStudy (anonymous):
What type of triangle has side lengths of 4, 7, and 9?
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OpenStudy (anonymous):
@maddierene13 I will be helping you today! Do you mean like acute, obtuse, right. Those kind of triangles? If you can elaborate more please ;)
OpenStudy (anonymous):
@hero Oh boy, its hero! ruler of open study
OpenStudy (anonymous):
use cosine rule.
hero (hero):
Use law of cosines to help you out with this \[c^2 = a^2 + b^2 - 2ab \cos C\]
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