Question

PLEASE HELP LAW OF COSINES

Answer 1

Answer:

34 degrees

Step-by-step explanation:

edg quiz

Answer 2

The Law of Cosine states
cos$C=(a^2+b^2-c^2)/2ab$

so plugging in the numbers gives us

cos$J=(13^2+19^2-11^2)/2(13*19) = 409/494$

We now have cosJ so plug that into your calculator and find arccos (arccos(cos(J)) = J)
arccos$(409/494)=34.11$
rounding your answer will give you 34°