Suppose a triangle has sides a, b, and let theta be the angle opposite the side length b . If cos theta 0 , what must be true?? A a^+b^c^ B a^+b^=c^ Ca^+c^b^

Question

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

tkhunny · Answer

Please take a good, hard look at the Law of Cosines.  Stare at it.  All things will come to light.

ffasinger · Answer

I already got the answer  few days ago . And got it right. Thanks for the help though.😀

tkhunny · Answer

This is why we have a [Close] button.

ffasinger · Answer

Sorry to waste your time.  I am new to this , and I had never gotten an awnswer. And I am not on this site 24/ 7 to delete the question.

tkhunny · Answer

No worries.  Sorry it took so long.