I believe the answer is b.
Answer:
1 and 1/4th
Step-by-step explanation:
i had this question
A quintic polynomial means a polynomials who's highest exponent value is 5. And a trinomial is a polynomial that has exactly three terms. So the answer is C
Okay, my prior answer got deleted for no work, apparently.
I'll re-post it though.
That word problem translates to:
Cosine rule
Cosx=(11 ²+8²-(15²))/2(11)(8)
Cosx=(121+64-225)/176
Cosx=-40/176
Cosx=-5/22
X=cos-1 -5/22
X=103.1