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Mathematics 18 Online
OpenStudy (anonymous):

Suppose a triangle has sides a, b, and c let theta be the angle opposite the side of length a. If cos theta < 0 what must be true? *I got C, is this correct?

OpenStudy (anonymous):

OpenStudy (gorv):

cos theta <0 means theta >90

OpenStudy (gorv):

that means it is obtuse angle triangle

OpenStudy (gorv):

sou are right

OpenStudy (anonymous):

Thanks for the confirmation. :)

OpenStudy (gorv):

welcome

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