Answer:
B.
Step-by-step explanation:
We are given that in a triangle ABC.
a=9
We have to find an equation which solve for b
We know that a sine law
Using above formula of sine law
Substituting all given values in the above formula of sine law
Then we get
By cross multiply then we get
Using division property of equality
Using division property of equality
Hence, option B is true option for solving b.
Answer:B.