Question

Suppose a triangle has sides a, b, and c, and let theta be the angle opposite the side of length a. If cos theta > 0 what must be true?
A. a2 + b2 > c2
B. a2 + b2 = c2
C. b2 + c2 < a2
D. b2 + c2 > a2

Answer 1

I think the answer is d or b if im wrong sorry hope this helped tho :p

Answer 2

The correct answer is D