Answer:
160/147
Step-by-step explanation:
Answer:
c
Step-by-step explanation:
Answer:
Add -3 and 7. 4
Step-by-step explanation:
Uh ur welcome
Answer:
(D) 
Step-by-step explanation:
Given: In triangle ABC, a=9, c=5 and ∠B=120°.
To find: The value of
.
solution: It is given that In triangle ABC, a=9, c=5 and ∠B=120°.
Now, using the law of cosines, we get

Substituting the given values, we get




which is the required value of
.
Therefore, option D is correct.