Here's the question you clicked on:
agillogly
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? a- b^2+c^2>a^2 b- a^2+b^2=c^2 c- b^2+c^2<a^2 d- a^2+b^2>c^2
cos(theta) being negative means theta is greater than 90 degrees... the triangle is obtuse... so i think it's c