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OpenStudy (anonymous):
how does this work? anyone help
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OpenStudy (anonymous):
geerky42 (geerky42):
At \(\cos\theta = 0\), you have this triangle, right?|dw:1417153595877:dw| If \(\cos\theta\) goes to negative number (when \(\theta\) is greater than \(90^o\)), then triangle will become obtuse, hence \(a\) being longer, right? So that would make \(a^2 > b^2+c^2\), right?
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