Answer:
D
Step-by-step explanation:
just multiply 6 time 90 which gives you 180
The Law of Cosine states
cos

so plugging in the numbers gives us
cos

We now have cosJ so plug that into your calculator and find arccos (arccos(cos(J)) = J)
arccos

rounding your answer will give you 34°
Answer:
I just finished this in math :) I'm pretty sure it's -3<x<2
Yes because they both equal -15 because you actually turn -10+(-5) into a subtraction problem because if there's a + and -, you actually turn it into a minus and the answer is -15.