In the triangle below (see attached), is x > 90?
(1) a2 + b2 < 15
(2) c > 4
OA will follow. Please explain
OA is C.
from Pith. we know that a^2 + b^2 = c^2.
1. we don't know whether a^2 + b^2 = c^2 because we don't know anything about c. it could be >< or it could equal 15. not suff
2. by itself it is clearly insuff.
C. a2 + b2 < c^2 it means that c is greater than an hypothetic hypothenuse, thus x>90